Checkpoint: Remplacement complet de imap 0.8 par ImapFlow : OAuth2 moderne avec jeton brut, TLS strict, traitement séquentiel des messages non lus, verrou anti-concurrence conservé, marquage Seen uniquement après succès, test de connexion adapté, diagnostic OAuth2 et tests unitaires ajoutés. Validation : 31 tests, TypeScript, build et authentification réelle Microsoft 365 réussis.

package.json

@@ -53,7 +53,6 @@
     "@types/archiver": "^7.0.0",
     "@types/bcrypt": "^6.0.0",
     "@types/chokidar": "^2.1.7",
-    "@types/imap": "^0.8.43",
     "@types/jsonwebtoken": "^9.0.10",
     "@types/mailparser": "^3.4.6",
     "@types/ssh2-sftp-client": "^9.0.6",
@@ -71,7 +70,7 @@
     "embla-carousel-react": "^8.6.0",
     "express": "^4.21.2",
     "framer-motion": "^12.23.22",
-    "imap": "^0.8.19",
+    "imapflow": "^1.7.2",
     "input-otp": "^1.4.2",
     "jose": "6.1.0",
     "jsonwebtoken": "^9.0.3",

pnpm-lock.yaml

@@ -133,9 +133,6 @@ importers:
       '@types/chokidar':
         specifier: ^2.1.7
         version: 2.1.7
-      '@types/imap':
-        specifier: ^0.8.43
-        version: 0.8.43
       '@types/jsonwebtoken':
         specifier: ^9.0.10
         version: 9.0.10
@@ -187,9 +184,9 @@ importers:
       framer-motion:
         specifier: ^12.23.22
         version: 12.23.22(react-dom@19.2.1(react@19.2.1))(react@19.2.1)
-      imap:
+      imapflow:
-        specifier: ^0.8.19
+        specifier: ^1.7.2
-        version: 0.8.19
+        version: 1.7.2
       input-otp:
         specifier: ^1.4.2
         version: 1.4.2(react-dom@19.2.1(react@19.2.1))(react@19.2.1)
@@ -1438,6 +1435,9 @@ packages:
   '@pdf-lib/upng@1.0.1':
     resolution: {integrity: sha512-dQK2FUMQtowVP00mtIksrlZhdFXQZPC+taih1q4CvPZ5vqdxR/LKBaFg0oAfzd1GlHZXXSPdQfzQnt+ViGvEIQ==}
 
+  '@pinojs/redact@0.4.0':
+    resolution: {integrity: sha512-k2ENnmBugE/rzQfEcdWHcCY+/FM3VLzH9cYEsbdsoqrvzAKRhUZeRNhAZvB8OitQJ1TBed3yqWtdjzS6wJKBwg==}
+
   '@pkgjs/parseargs@0.11.0':
     resolution: {integrity: sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==}
     engines: {node: '>=14'}
@@ -2580,9 +2580,6 @@ packages:
   '@types/http-errors@2.0.5':
     resolution: {integrity: sha512-r8Tayk8HJnX0FztbZN7oVqGccWgw98T/0neJphO91KkmOzug1KkofZURD4UaD5uH8AqcFLfdPErnBod0u71/qg==}
 
-  '@types/imap@0.8.43':
-    resolution: {integrity: sha512-POPoqrDax9mxM2N4ITZYCWaFtg1ORVfzJe4S7xwSh9aHawdEb7FwWTJYiAhzIvWp7DM+6BajnzYOwZ1BUrqtow==}
-
   '@types/jsonwebtoken@9.0.10':
     resolution: {integrity: sha512-asx5hIG9Qmf/1oStypjanR7iKTv0gXQ1Ov/jfrX6kS/EO0OFni8orbmGCn0672NHR3kXHwpAwR+B368ZGN/2rA==}
 
@@ -2681,6 +2678,9 @@ packages:
   '@vitest/utils@2.1.9':
     resolution: {integrity: sha512-v0psaMSkNJ3A2NMrUEHFRzJtDPFn+/VWZ5WxImB21T9fjucJRmS7xCS3ppEnARb9y11OAzaD+P2Ps+b+BGX5iQ==}
 
+  '@zone-eu/mailsplit@5.4.15':
+    resolution: {integrity: sha512-c7ZpxauvF4AEkDJlKDYO7iMUtMuqJMBnDWNff1cyx+d7zaBVR3iFEmXhNHOVoMmVyVF3pTZLsLIJsEFKDldOAA==}
+
   '@zone-eu/mailsplit@5.4.8':
     resolution: {integrity: sha512-eEyACj4JZ7sjzRvy26QhLgKEMWwQbsw1+QZnlLX+/gihcNH07lVPOcnwf5U6UAL7gkc//J3jVd76o/WS+taUiA==}
 
@@ -2744,6 +2744,10 @@ packages:
   asynckit@0.4.0:
     resolution: {integrity: sha512-Oei9OH4tRh0YqU3GxhX79dM/mwVgvbZJaSNaRk+bshkj0S5cfHcgYakreBjrHwatXKbz+IoIdYLxrKim2MjW0Q==}
 
+  atomic-sleep@1.0.0:
+    resolution: {integrity: sha512-kNOjDqAh7px0XWNI+4QbzoiR/nTkHAWNud2uvnJquD1/x5a7EQZMJT0AczqK0Qn67oY/TTQ1LbUKajZpp3I9tQ==}
+    engines: {node: '>=8.0.0'}
+
   autoprefixer@10.4.21:
     resolution: {integrity: sha512-O+A6LWV5LDHSJD3LjHYoNi4VLsj/Whi7k6zG12xTYaU4cQ8oxQGckXNX8cRHK5yOZ/ppVHe0ZBXGzSV9jXdVbQ==}
     engines: {node: ^10 || ^12 || >=14}
@@ -3542,12 +3546,15 @@ packages:
     resolution: {integrity: sha512-im9DjEDQ55s9fL4EYzOAv0yMqmMBSZp6G0VvFyTMPKWxiSBHUj9NW/qqLmXUwXrrM7AvqSlTCfvqRb0cM8yYqw==}
     engines: {node: '>=0.10.0'}
 
+  iconv-lite@0.7.3:
+    resolution: {integrity: sha512-IKXpvIzjnC9XTAUbVBcMfGS0EPaIXtW6v+zr+RRp+hqULEpo0owZax6wyRwPOJbWbzjYspQwusTsfVr0ifh4uQ==}
+    engines: {node: '>=0.10.0'}
+
   ieee754@1.2.1:
     resolution: {integrity: sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA==}
 
-  imap@0.8.19:
+  imapflow@1.7.2:
-    resolution: {integrity: sha512-z5DxEA1uRnZG73UcPA4ES5NSCGnPuuouUx43OPX7KZx1yzq3N8/vx2mtXEShT5inxB3pRgnfG1hijfu7XN2YMw==}
+    resolution: {integrity: sha512-1pWZgWQ/M2Q7kPSW7Sp7QDn+ZPEqs/9IymYh34RY+3J7d3vfPayhSmRAl0tB7weblGU0SR/t7eYES3TW6vSiOQ==}
-    engines: {node: '>=0.8.0'}
 
   inherits@2.0.4:
     resolution: {integrity: sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==}
@@ -3565,6 +3572,10 @@ packages:
   iobuffer@5.4.0:
     resolution: {integrity: sha512-DRebOWuqDvxunfkNJAlc3IzWIPD5xVxwUNbHr7xKB8E6aLJxIPfNX3CoMJghcFjpv6RWQsrcJbghtEwSPoJqMA==}
 
+  ip-address@10.5.0:
+    resolution: {integrity: sha512-R5SnVLJmgYYvf2F2ZgwSBnelz5G4q5AxIC277GDfUaNbrZKNANcBC7RHqYYePlszf4kBolVkJauG0ZjHHFh55g==}
+    engines: {node: '>= 12'}
+
   ipaddr.js@1.9.1:
     resolution: {integrity: sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==}
     engines: {node: '>= 0.10'}
@@ -3598,9 +3609,6 @@ packages:
     resolution: {integrity: sha512-e6rvdUCiQCAuumZslxRJWR/Doq4VpPR82kqclvcS0efgt430SlGIk05vdCN58+VrzgtIcfNODjozVielycD4Sw==}
     engines: {node: '>=16'}
 
-  isarray@0.0.1:
-    resolution: {integrity: sha512-D2S+3GLxWH+uhrNEcoh/fnmYeP8E8/zHl644d/jdA0g2uyXvy3sb0qxotE+ne0LtccHknQzWwZEzhak7oJ0COQ==}
-
   isarray@1.0.0:
     resolution: {integrity: sha512-VLghIWNM6ELQzo7zwmcg0NmTVyWKYjvIeM83yjp0wRDTmUnrM678fQbcKBo6n2CJEF0szoG//ytg+TKla89ALQ==}
 
@@ -3661,6 +3669,9 @@ packages:
   libmime@5.3.7:
     resolution: {integrity: sha512-FlDb3Wtha8P01kTL3P9M+ZDNDWPKPmKHWaU/cG/lg5pfuAwdflVpZE+wm9m7pKmC5ww6s+zTxBKS1p6yl3KpSw==}
 
+  libmime@5.4.2:
+    resolution: {integrity: sha512-+IQnCOdPiufGBkOii+Ze8F7iniyBzOwvWDbn1DyExBpc9pT2B3IEMQi7GUc/PpqhNUh/sr1SG9UXDITQoR0VIA==}
+
   libqp@2.1.1:
     resolution: {integrity: sha512-0Wd+GPz1O134cP62YU2GTOPNA7Qgl09XwCqM5zpBv87ERCXdfDtyKXvV7c9U22yWJh44QZqBocFnXN11K96qow==}
 
@@ -3931,6 +3942,10 @@ packages:
     resolution: {integrity: sha512-W67iLl4J2EXEGTbfeHCffrjDfitvLANg0UlX3wFUUSTx92KXRFegMHUVgSqE+wvhAbi4WqjGg9czysTV2Epbew==}
     engines: {node: '>= 0.4'}
 
+  on-exit-leak-free@2.1.2:
+    resolution: {integrity: sha512-0eJJY6hXLGf1udHwfNftBqH+g73EU4B504nZeKpz1sYRKafAghwxEJunB2O7rDZkL4PGfsMVnTXZ2EjibbqcsA==}
+    engines: {node: '>=14.0.0'}
+
   on-finished@2.4.1:
     resolution: {integrity: sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg==}
     engines: {node: '>= 0.8'}
@@ -4008,6 +4023,16 @@ packages:
     resolution: {integrity: sha512-5gTmgEY/sqK6gFXLIsQNH19lWb4ebPDLA4SdLP7dsWkIXHWlG66oPuVvXSGFPppYZz8ZDZq0dYYrbHfBCVUb1Q==}
     engines: {node: '>=12'}
 
+  pino-abstract-transport@3.0.0:
+    resolution: {integrity: sha512-wlfUczU+n7Hy/Ha5j9a/gZNy7We5+cXp8YL+X+PG8S0KXxw7n/JXA3c46Y0zQznIJ83URJiwy7Lh56WLokNuxg==}
+
+  pino-std-serializers@7.1.0:
+    resolution: {integrity: sha512-BndPH67/JxGExRgiX1dX0w1FvZck5Wa4aal9198SrRhZjH3GxKQUKIBnYJTdj2HDN3UQAS06HlfcSbQj2OHmaw==}
+
+  pino@10.3.1:
+    resolution: {integrity: sha512-r34yH/GlQpKZbU1BvFFqOjhISRo1MNx1tWYsYvmj6KIRHSPMT2+yHOEb1SG6NMvRoHRF0a07kCOox/9yakl1vg==}
+    hasBin: true
+
   pnpm@10.18.0:
     resolution: {integrity: sha512-6AT4ifHOzEDVctsITuw+SIFzn43sacD/ENLRvv+aTjCTg7ontbdQBZ1/TBSVNbbNDSyx7Trrc5I5pChKaPQM+g==}
     engines: {node: '>=18.12'}
@@ -4032,6 +4057,9 @@ packages:
   process-nextick-args@2.0.1:
     resolution: {integrity: sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==}
 
+  process-warning@5.1.0:
+    resolution: {integrity: sha512-jQSaVHsPgtyw60e1rQ/A+/ArPEj/S8pS/vFnyGa/gYFXrKk/6RuDkoqVDQ5NI5MmS01698ltlAk0NoDBNLujRw==}
+
   process@0.11.10:
     resolution: {integrity: sha512-cdGef/drWFoydD1JsMzuFf8100nZl+GT+yacc2bEced5f9Rjk4z+WtFUTBu9PhOi9j/jfmBPu0mMEY4wIdAF8A==}
     engines: {node: '>= 0.6.0'}
@@ -4054,6 +4082,9 @@ packages:
     resolution: {integrity: sha512-+38qI9SOr8tfZ4QmJNplMUxqjbe7LKvvZgWdExBOmd+egZTtjLB67Gu0HRX3u/XOq7UU2Nx6nsjvS16Z9uwfpg==}
     engines: {node: '>=0.6'}
 
+  quick-format-unescaped@4.0.4:
+    resolution: {integrity: sha512-tYC1Q1hgyRuHgloV/YXs2w15unPVh8qfu/qCTfhTYamaw7fyhumKa2yGpdSo87vY32rIclj+4fWYQXUMs9EHvg==}
+
   raf@3.4.1:
     resolution: {integrity: sha512-Sq4CW4QhwOHE8ucn6J34MqtZCeWFP2aQSmrlroYgqAV1PjStIhJXxYuTgUIfkEk7zTLjmIjLmU5q+fbD1NnOJA==}
 
@@ -4154,9 +4185,6 @@ packages:
     resolution: {integrity: sha512-DGrYcCWK7tvYMnWh79yrPHt+vdx9tY+1gPZa7nJQtO/p8bLTDaHp4dzwEhQB7pZ4Xe3ok4XKuEPrVuc+wlpkmw==}
     engines: {node: '>=0.10.0'}
 
-  readable-stream@1.1.14:
-    resolution: {integrity: sha512-+MeVjFf4L44XUkhM1eYbD8fyEsxcV81pqMSR5gblfcLCHfZvbrqy4/qYHE+/R5HoBUT11WV5O08Cr1n3YXkWVQ==}
-
   readable-stream@2.3.8:
     resolution: {integrity: sha512-8p0AUk4XODgIewSi0l8Epjs+EVnWiK7NoDIEGU0HhE7+ZyY8D1IMY7odu5lRrFXGg71L15KG8QrPmum45RTtdA==}
 
@@ -4175,6 +4203,13 @@ packages:
     resolution: {integrity: sha512-9u/XQ1pvrQtYyMpZe7DXKv2p5CNvyVwzUB6uhLAnQwHMSgKMBR62lc7AHljaeteeHXn11XTAaLLUVZYVZyuRBQ==}
     engines: {node: '>= 20.19.0'}
 
+  real-require@0.2.0:
+    resolution: {integrity: sha512-57frrGM/OCTLqLOAh0mhVA9VBMHd+9U7Zb2THMGdBUoZVOtGbJzjxsYGDJ3A9AYYCP4hn6y1TVbaOfzWtm5GFg==}
+    engines: {node: '>= 12.13.0'}
+
+  real-require@1.0.0:
+    resolution: {integrity: sha512-P4nbQYQfePJxRSmY+v/KINxVucm4NF3p3s7pJveMTtom52FR4YGltUQLB8idDXwDDWW+eYrWDFbuzUnjoWHF7g==}
+
   recharts-scale@0.4.5:
     resolution: {integrity: sha512-kivNFO+0OcUNu7jQquLXAxz1FIwZj8nrj+YkOKc5694NbjCvcT6aSZiIzNzd2Kul4o4rTto8QVR9lMNtxD4G1w==}
 
@@ -4214,6 +4249,10 @@ packages:
   safe-buffer@5.2.1:
     resolution: {integrity: sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==}
 
+  safe-stable-stringify@2.5.0:
+    resolution: {integrity: sha512-b3rppTKm9T+PsVCBEOUR46GWI7fdOs00VKZ1+9c1EWDaDMvjQc6tUwuFyIprgGgTcWoVHSKrU8H31ZHA2e0RHA==}
+    engines: {node: '>=10'}
+
   safer-buffer@2.1.2:
     resolution: {integrity: sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==}
 
@@ -4223,10 +4262,6 @@ packages:
   selderee@0.11.0:
     resolution: {integrity: sha512-5TF+l7p4+OsnP8BCCvSyZiSPc4x4//p5uPwK8TCnVPJYRmU2aYKMpOXvw8zM5a5JvuuCGN1jmsMwuU2W02ukfA==}
 
-  semver@5.3.0:
-    resolution: {integrity: sha512-mfmm3/H9+67MCVix1h+IXTpDwL6710LyHuk7+cWC9T1mE0qz4iHhh6r4hU2wrIT9iTsAAC2XQRvfblL028cpLw==}
-    hasBin: true
-
   semver@6.3.1:
     resolution: {integrity: sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==}
     hasBin: true
@@ -4285,6 +4320,17 @@ packages:
     resolution: {integrity: sha512-bzyZ1e88w9O1iNJbKnOlvYTrWPDl46O1bG0D3XInv+9tkPrxrN8jUUTiFlDkkmKWgn1M6CfIA13SuGqOa9Korw==}
     engines: {node: '>=14'}
 
+  smart-buffer@4.2.0:
+    resolution: {integrity: sha512-94hK0Hh8rPqQl2xXc3HsaBoOXKV20MToPkcXvwbISWLEs+64sBq5kFgn2kJDHb1Pry9yrP0dxrCI9RRci7RXKg==}
+    engines: {node: '>= 6.0.0', npm: '>= 3.0.0'}
+
+  socks@2.8.9:
+    resolution: {integrity: sha512-LJhUYUvItdQ0LkJTmPeaEObWXAqFyfmP85x0tch/ez9cahmhlBBLbIqDFnvBnUJGagb0JbIQrkBs1wJ+yRYpEw==}
+    engines: {node: '>= 10.0.0', npm: '>= 3.0.0'}
+
+  sonic-boom@4.2.1:
+    resolution: {integrity: sha512-w6AxtubXa2wTXAUsZMMWERrsIRAdrK0Sc+FUytWvYAhBJLyuI4llrMIC1DtlNSdI99EI86KZum2MMq3EAZlF9Q==}
+
   sonner@2.0.7:
     resolution: {integrity: sha512-W6ZN4p58k8aDKA4XPcx2hpIQXBRAgyiWVkYhT7CvK6D3iAu7xjvVyhQHg2/iaKJZ1XVJ4r7XuwGL+WGEK37i9w==}
     peerDependencies:
@@ -4302,6 +4348,10 @@ packages:
     resolution: {integrity: sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==}
     engines: {node: '>=0.10.0'}
 
+  split2@4.2.0:
+    resolution: {integrity: sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==}
+    engines: {node: '>= 10.x'}
+
   sqlstring@2.3.3:
     resolution: {integrity: sha512-qC9iz2FlN7DQl3+wjwn3802RTyjCx7sDvfQEXchwa6CWOx07/WVfh91gBmQ9fahw8snwGEWU3xGzOt4tFyHLxg==}
     engines: {node: '>= 0.6'}
@@ -4343,9 +4393,6 @@ packages:
     resolution: {integrity: sha512-HnLOCR3vjcY8beoNLtcjZ5/nxn2afmME6lhrDrebokqMap+XbeW8n9TXpPDOqdGK5qcI3oT0GKTW6wC7EMiVqA==}
     engines: {node: '>=12'}
 
-  string_decoder@0.10.31:
-    resolution: {integrity: sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ==}
-
   string_decoder@1.1.1:
     resolution: {integrity: sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==}
 
@@ -4402,6 +4449,10 @@ packages:
   text-segmentation@1.0.3:
     resolution: {integrity: sha512-iOiPUo/BGnZ6+54OsWxZidGCsdU8YbE4PSpdPinp7DeMtUJNJBoJ/ouUSTJjHkh1KntHaltHl/gDs2FC4i5+Nw==}
 
+  thread-stream@4.2.0:
+    resolution: {integrity: sha512-e2zZ96wSChazBsbENf/Pcm/4swHt2cEKQ92rhUjkL9GCKiTDJIaTBenjE/m9DXi0QBmTMDkFDdOomUy20A1tDQ==}
+    engines: {node: '>=20'}
+
   tiny-invariant@1.3.3:
     resolution: {integrity: sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==}
 
@@ -4508,9 +4559,6 @@ packages:
     peerDependencies:
       react: ^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0
 
-  utf7@1.0.2:
-    resolution: {integrity: sha512-qQrPtYLLLl12NF4DrM9CvfkxkYI97xOb5dsnGZHE3teFr0tWiEZ9UdgMPczv24vl708cYMpe6mGXGHrotIp3Bw==}
-
   util-deprecate@1.0.2:
     resolution: {integrity: sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==}
 
@@ -5883,6 +5931,8 @@ snapshots:
     dependencies:
       pako: 1.0.11
 
+  '@pinojs/redact@0.4.0': {}
+
   '@pkgjs/parseargs@0.11.0':
     optional: true
 
@@ -7136,10 +7186,6 @@ snapshots:
 
   '@types/http-errors@2.0.5': {}
 
-  '@types/imap@0.8.43':
-    dependencies:
-      '@types/node': 24.7.0
-
   '@types/jsonwebtoken@9.0.10':
     dependencies:
       '@types/ms': 2.1.0
@@ -7269,6 +7315,12 @@ snapshots:
       loupe: 3.2.1
       tinyrainbow: 1.2.0
 
+  '@zone-eu/mailsplit@5.4.15':
+    dependencies:
+      libbase64: 1.3.0
+      libmime: 5.4.2
+      libqp: 2.1.1
+
   '@zone-eu/mailsplit@5.4.8':
     dependencies:
       libbase64: 1.3.0
@@ -7338,6 +7390,8 @@ snapshots:
 
   asynckit@0.4.0: {}
 
+  atomic-sleep@1.0.0: {}
+
   autoprefixer@10.4.21(postcss@8.5.6):
     dependencies:
       browserslist: 4.26.3
@@ -8118,12 +8172,22 @@ snapshots:
     dependencies:
       safer-buffer: 2.1.2
 
+  iconv-lite@0.7.3:
+    dependencies:
+      safer-buffer: 2.1.2
+
   ieee754@1.2.1: {}
 
-  imap@0.8.19:
+  imapflow@1.7.2:
     dependencies:
-      readable-stream: 1.1.14
+      '@zone-eu/mailsplit': 5.4.15
-      utf7: 1.0.2
+      encoding-japanese: 2.2.0
+      iconv-lite: 0.7.3
+      libbase64: 1.3.0
+      libmime: 5.4.2
+      libqp: 2.1.1
+      pino: 10.3.1
+      socks: 2.8.9
 
   inherits@2.0.4: {}
 
@@ -8136,6 +8200,8 @@ snapshots:
 
   iobuffer@5.4.0: {}
 
+  ip-address@10.5.0: {}
+
   ipaddr.js@1.9.1: {}
 
   is-docker@3.0.0: {}
@@ -8156,8 +8222,6 @@ snapshots:
     dependencies:
       is-inside-container: 1.0.0
 
-  isarray@0.0.1: {}
-
   isarray@1.0.0: {}
 
   isexe@2.0.0: {}
@@ -8232,6 +8296,13 @@ snapshots:
       libbase64: 1.3.0
       libqp: 2.1.1
 
+  libmime@5.4.2:
+    dependencies:
+      encoding-japanese: 2.2.0
+      iconv-lite: 0.7.3
+      libbase64: 1.3.0
+      libqp: 2.1.1
+
   libqp@2.1.1: {}
 
   lightningcss-darwin-arm64@1.30.1:
@@ -8439,6 +8510,8 @@ snapshots:
 
   object-inspect@1.13.4: {}
 
+  on-exit-leak-free@2.1.2: {}
+
   on-finished@2.4.1:
     dependencies:
       ee-first: 1.1.1
@@ -8508,6 +8581,26 @@ snapshots:
 
   picomatch@4.0.3: {}
 
+  pino-abstract-transport@3.0.0:
+    dependencies:
+      split2: 4.2.0
+
+  pino-std-serializers@7.1.0: {}
+
+  pino@10.3.1:
+    dependencies:
+      '@pinojs/redact': 0.4.0
+      atomic-sleep: 1.0.0
+      on-exit-leak-free: 2.1.2
+      pino-abstract-transport: 3.0.0
+      pino-std-serializers: 7.1.0
+      process-warning: 5.1.0
+      quick-format-unescaped: 4.0.4
+      real-require: 0.2.0
+      safe-stable-stringify: 2.5.0
+      sonic-boom: 4.2.1
+      thread-stream: 4.2.0
+
   pnpm@10.18.0: {}
 
   postcss-selector-parser@6.0.10:
@@ -8527,6 +8620,8 @@ snapshots:
 
   process-nextick-args@2.0.1: {}
 
+  process-warning@5.1.0: {}
+
   process@0.11.10: {}
 
   prop-types@15.8.1:
@@ -8548,6 +8643,8 @@ snapshots:
     dependencies:
       side-channel: 1.1.0
 
+  quick-format-unescaped@4.0.4: {}
+
   raf@3.4.1:
     dependencies:
       performance-now: 2.1.0
@@ -8650,13 +8747,6 @@ snapshots:
 
   react@19.2.1: {}
 
-  readable-stream@1.1.14:
-    dependencies:
-      core-util-is: 1.0.3
-      inherits: 2.0.4
-      isarray: 0.0.1
-      string_decoder: 0.10.31
-
   readable-stream@2.3.8:
     dependencies:
       core-util-is: 1.0.3
@@ -8687,6 +8777,10 @@ snapshots:
 
   readdirp@5.0.0: {}
 
+  real-require@0.2.0: {}
+
+  real-require@1.0.0: {}
+
   recharts-scale@0.4.5:
     dependencies:
       decimal.js-light: 2.5.1
@@ -8748,6 +8842,8 @@ snapshots:
 
   safe-buffer@5.2.1: {}
 
+  safe-stable-stringify@2.5.0: {}
+
   safer-buffer@2.1.2: {}
 
   scheduler@0.27.0: {}
@@ -8756,8 +8852,6 @@ snapshots:
     dependencies:
       parseley: 0.12.1
 
-  semver@5.3.0: {}
-
   semver@6.3.1: {}
 
   semver@7.7.3: {}
@@ -8862,6 +8956,17 @@ snapshots:
 
   signal-exit@4.1.0: {}
 
+  smart-buffer@4.2.0: {}
+
+  socks@2.8.9:
+    dependencies:
+      ip-address: 10.5.0
+      smart-buffer: 4.2.0
+
+  sonic-boom@4.2.1:
+    dependencies:
+      atomic-sleep: 1.0.0
+
   sonner@2.0.7(react-dom@19.2.1(react@19.2.1))(react@19.2.1):
     dependencies:
       react: 19.2.1
@@ -8876,6 +8981,8 @@ snapshots:
 
   source-map@0.6.1: {}
 
+  split2@4.2.0: {}
+
   sqlstring@2.3.3: {}
 
   ssf@0.11.2:
@@ -8925,8 +9032,6 @@ snapshots:
       emoji-regex: 9.2.2
       strip-ansi: 7.2.0
 
-  string_decoder@0.10.31: {}
-
   string_decoder@1.1.1:
     dependencies:
       safe-buffer: 5.1.2
@@ -8999,6 +9104,10 @@ snapshots:
       utrie: 1.0.2
     optional: true
 
+  thread-stream@4.2.0:
+    dependencies:
+      real-require: 1.0.0
+
   tiny-invariant@1.3.3: {}
 
   tinybench@2.9.0: {}
@@ -9077,10 +9186,6 @@ snapshots:
     dependencies:
       react: 19.2.1
 
-  utf7@1.0.2:
-    dependencies:
-      semver: 5.3.0
-
   util-deprecate@1.0.2: {}
 
   utils-merge@1.0.1: {}

scripts/test-imapflow-oauth.mjs

@@ -0,0 +1,49 @@
+import { ImapFlow } from "imapflow";
+
+const required = (name) => {
+  const value = process.env[name];
+  if (!value) throw new Error(`Variable ${name} manquante`);
+  return value;
+};
+
+const tenantId = required("AZURE_AD_TENANT_ID");
+const clientId = required("AZURE_AD_CLIENT_ID");
+const clientSecret = required("AZURE_AD_CLIENT_SECRET");
+const email = required("IMAP_TEST_EMAIL");
+const host = process.env.IMAP_TEST_HOST || "outlook.office365.com";
+
+const response = await fetch(
+  `https://login.microsoftonline.com/${tenantId}/oauth2/v2.0/token`,
+  {
+    method: "POST",
+    headers: { "Content-Type": "application/x-www-form-urlencoded" },
+    body: new URLSearchParams({
+      client_id: clientId,
+      client_secret: clientSecret,
+      scope: "https://outlook.office365.com/.default",
+      grant_type: "client_credentials",
+    }),
+  },
+);
+const tokenResponse = await response.json();
+if (!response.ok || !tokenResponse.access_token) {
+  throw new Error(`Échec OAuth2 : ${tokenResponse.error || response.status}`);
+}
+
+const client = new ImapFlow({
+  host,
+  port: 993,
+  secure: true,
+  auth: { user: email, accessToken: tokenResponse.access_token },
+  tls: { servername: host, rejectUnauthorized: true },
+  verifyOnly: true,
+  logger: false,
+});
+
+try {
+  await client.connect();
+  console.log(`Authentification ImapFlow OAuth2 réussie pour ${email}`);
+} finally {
+  if (client.usable) await client.logout().catch(() => client.close());
+  else client.close();
+}

server/emailImportService.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from "vitest";
+import { createImapFlowOptions, type EmailImportConfig } from "./emailImportService";
+
+const baseConfig: EmailImportConfig = {
+  userId: 2,
+  emailAddress: "compta@example.org",
+  password: "secret",
+  host: "outlook.office365.com",
+  port: 993,
+};
+
+describe("createImapFlowOptions", () => {
+  it("transmet le jeton brut à ImapFlow pour une authentification OAuth2", () => {
+    const options = createImapFlowOptions(
+      { ...baseConfig, authMode: "oauth2" },
+      "access-token-value",
+    );
+
+    expect(options.secure).toBe(true);
+    expect(options.auth).toEqual({
+      user: "compta@example.org",
+      accessToken: "access-token-value",
+    });
+    expect(options.auth).not.toHaveProperty("pass");
+    expect(options.tls?.rejectUnauthorized).toBe(true);
+    expect(options.disableAutoIdle).toBe(true);
+  });
+
+  it("conserve le mot de passe uniquement pour le mode basique", () => {
+    const options = createImapFlowOptions({ ...baseConfig, authMode: "basic" });
+
+    expect(options.auth).toEqual({
+      user: "compta@example.org",
+      pass: "secret",
+    });
+    expect(options.auth).not.toHaveProperty("accessToken");
+  });
+});

server/emailImportService.ts

@@ -1,4 +1,4 @@
-import Imap from "imap";
+import { ImapFlow, type ImapFlowOptions, type SearchObject } from "imapflow";
 import { simpleParser, ParsedMail, Attachment } from "mailparser";
 import {
   getImportSettingsByUser,
@@ -15,10 +15,10 @@ import { extractInvoicesWithMistral, generateMetadataJSON } from "./invoiceExtra
 import { localStorageDelete, localStoragePut, generateStorageKey } from "./localStorage";
 import { calculateFileSha256 } from "./fileFingerprint";
 import { sendImportNotification } from "./notificationService";
-import { getOffice365ImapToken, buildXOAuth2String } from "./office365OAuth";
+import { getOffice365ImapToken } from "./office365OAuth";
 import { applyAutomationRules } from "./automationEngine";
 
-interface EmailImportConfig {
+export interface EmailImportConfig {
   userId: number;
   emailAddress: string;
   password: string;
@@ -32,6 +32,35 @@ interface EmailImportConfig {
   azureClientSecret?: string;
 }
 
+/**
+ * Construit les options ImapFlow sans effectuer d'appel réseau.
+ * ImapFlow reçoit le jeton brut et construit lui-même SASL XOAUTH2.
+ */
+export function createImapFlowOptions(
+  config: EmailImportConfig,
+  accessToken?: string,
+): ImapFlowOptions {
+  const auth = config.authMode === "oauth2"
+    ? { user: config.emailAddress, accessToken }
+    : { user: config.emailAddress, pass: config.password };
+
+  return {
+    host: config.host,
+    port: config.port,
+    secure: true,
+    auth,
+    tls: {
+      servername: config.host,
+      rejectUnauthorized: true,
+    },
+    logger: false,
+    disableAutoIdle: true,
+    connectionTimeout: 30_000,
+    greetingTimeout: 20_000,
+    socketTimeout: 120_000,
+  };
+}
+
 // Store active intervals for each user
 const activeIntervals = new Map<number, NodeJS.Timeout>();
 // Une extraction IA peut dépasser la fréquence configurée : ce verrou évite
@@ -332,7 +361,7 @@ async function processEmailAttachment(
  * - basic : login/password classique
  * - oauth2 : obtient un token Azure AD et utilise XOAUTH2
  */
-async function buildImapConfig(config: EmailImportConfig): Promise<Imap.Config> {
+async function buildImapConfig(config: EmailImportConfig): Promise<ImapFlowOptions> {
   if (config.authMode === "oauth2") {
     if (!config.azureTenantId || !config.azureClientId || !config.azureClientSecret) {
       throw new Error(
@@ -346,114 +375,75 @@ async function buildImapConfig(config: EmailImportConfig): Promise<Imap.Config>
       config.azureClientId,
       config.azureClientSecret
     );
-    const xoauth2 = buildXOAuth2String(config.emailAddress, accessToken);
     console.log(`[EmailImport] OAuth2 token obtained successfully`);
 
-    return {
+    return createImapFlowOptions(config, accessToken);
-      user: config.emailAddress,
-      xoauth2,
-      host: config.host,
-      port: config.port,
-      tls: true,
-      tlsOptions: { rejectUnauthorized: false },
-      authTimeout: 30000,
-    } as any;
   }
 
-  // Basic auth (par défaut)
+  return createImapFlowOptions(config);
-  return {
-    user: config.emailAddress,
-    password: config.password,
-    host: config.host,
-    port: config.port,
-    tls: true,
-    tlsOptions: { rejectUnauthorized: false },
-    authTimeout: 30000,
-  };
 }
 
 /**
  * Connect to IMAP and process unread emails with PDF attachments
  */
 async function checkEmailsForPDFs(config: EmailImportConfig): Promise<void> {
-  // Build IMAP config (may involve async OAuth2 token fetch)
   const imapConfig = await buildImapConfig(config);
-
+  const client = new ImapFlow(imapConfig);
-  return new Promise((resolve, reject) => {
+  client.on("error", (error) => {
-    const imap = new Imap(imapConfig);
+    console.error(`[EmailImport] IMAP connection error for user ${config.userId}:`, error);
-
-    function openInbox(cb: (err: Error | null, box?: any) => void) {
-      imap.openBox("INBOX", false, cb);
-    }
-
-    imap.once("ready", () => {
-      console.log(`[EmailImport] Connected to IMAP server for user ${config.userId} (mode: ${config.authMode || "basic"})`);
-      
-      openInbox((err) => {
-        if (err) {
-          console.error("[EmailImport] Error opening inbox:", err);
-          imap.end();
-          reject(err);
-          return;
-        }
-
-        // Build search criteria: unread emails, optionally filtered by date
-        const searchCriteria: any[] = ["UNSEEN"];
-        if (config.sinceDate) {
-          // IMAP SINCE expects a date string like "1-Jan-2026"
-          const since = new Date(config.sinceDate * 1000);
-          const months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
-          const sinceStr = `${since.getDate()}-${months[since.getMonth()]}-${since.getFullYear()}`;
-          searchCriteria.push(["SINCE", sinceStr]);
-          console.log(`[EmailImport] Filtering emails since ${sinceStr} for user ${config.userId}`);
-        }
-        imap.search(searchCriteria, (err, results) => {
-          if (err) {
-            console.error("[EmailImport] Error searching emails:", err);
-            imap.end();
-            reject(err);
-            return;
-          }
-
-          if (!results || results.length === 0) {
-            console.log(`[EmailImport] No unread emails found for user ${config.userId}`);
-            imap.end();
-            resolve();
-            return;
-          }
-
-          console.log(`[EmailImport] Found ${results.length} unread emails for user ${config.userId}`);
-
-          const fetch = imap.fetch(results, {
-            bodies: "",
-            markSeen: false, // Don't mark as seen yet
   });
 
-          const processedEmailUids: number[] = [];
+  let lock: Awaited<ReturnType<ImapFlow["getMailboxLock"]>> | undefined;
-          const messageTasks: Promise<void>[] = [];
-
-          fetch.on("message", (msg, seqno) => {
-            const uidPromise = new Promise<number>((resolveUid) => {
-              msg.once("attributes", (attributes) => resolveUid(attributes.uid));
-            });
-
-            msg.on("body", (stream) => {
-              const task = (async () => {
   try {
-                  const parsed: ParsedMail = await simpleParser(stream as any);
+    await client.connect();
+    console.log(
+      `[EmailImport] Connected to IMAP server for user ${config.userId} (mode: ${config.authMode || "basic"})`,
+    );
+
+    lock = await client.getMailboxLock("INBOX", {
+      readOnly: false,
+      acquireTimeout: 30_000,
+      description: `invoice-import-user-${config.userId}`,
+    });
+
+    const searchCriteria: SearchObject = { seen: false };
+    if (config.sinceDate) {
+      searchCriteria.since = new Date(config.sinceDate * 1000);
+      console.log(
+        `[EmailImport] Filtering emails since ${searchCriteria.since.toISOString()} for user ${config.userId}`,
+      );
+    }
+
+    const unreadUids = await client.search(searchCriteria, { uid: true });
+    if (!unreadUids || unreadUids.length === 0) {
+      console.log(`[EmailImport] No unread emails found for user ${config.userId}`);
+      return;
+    }
+
+    console.log(`[EmailImport] Found ${unreadUids.length} unread emails for user ${config.userId}`);
+
+    // Le traitement reste séquentiel afin d'éviter plusieurs extractions IA
+    // concurrentes sur les mêmes pièces jointes.
+    for (const uid of unreadUids) {
+      const message = await client.fetchOne(uid, { source: true }, { uid: true });
+      if (!message || !message.source) {
+        console.warn(`[EmailImport] Message UID ${uid} without source, skipped`);
+        continue;
+      }
+
+      try {
+        const parsed: ParsedMail = await simpleParser(message.source);
         const pdfAttachments = parsed.attachments.filter(
           (attachment) =>
             attachment.contentType === "application/pdf" ||
             attachment.filename?.toLowerCase().endsWith(".pdf"),
         );
 
-                  if (pdfAttachments.length === 0) return;
+        if (pdfAttachments.length === 0) continue;
-
-                  console.log(
-                    `[EmailImport] Email ${seqno} has ${pdfAttachments.length} PDF attachment(s)`,
-                  );
 
+        console.log(`[EmailImport] Email UID ${uid} has ${pdfAttachments.length} PDF attachment(s)`);
         let allAttachmentsSucceeded = true;
+
         for (const attachment of pdfAttachments) {
           try {
             const result = await processEmailAttachment(
@@ -475,69 +465,25 @@ async function checkEmailsForPDFs(config: EmailImportConfig): Promise<void> {
             }
           } catch (error) {
             allAttachmentsSucceeded = false;
-                      console.error(
+            console.error(`[EmailImport] Failed to process attachment from UID ${uid}:`, error);
-                        `[EmailImport] Failed to process attachment from email ${seqno}:`,
-                        error,
-                      );
           }
         }
 
         if (allAttachmentsSucceeded) {
-                    const uid = await uidPromise;
+          await client.messageFlagsAdd(uid, ["\\Seen"], { uid: true, silent: true });
-                    if (!processedEmailUids.includes(uid)) processedEmailUids.push(uid);
+          console.log(`[EmailImport] Marked email UID ${uid} as seen`);
         }
       } catch (error) {
-                  console.error(`[EmailImport] Error parsing email ${seqno}:`, error);
+        console.error(`[EmailImport] Error parsing email UID ${uid}:`, error);
       }
-              })();
-
-              messageTasks.push(task);
-            });
-          });
-
-          fetch.once("error", (err) => {
-            console.error("[EmailImport] Fetch error:", err);
-            imap.end();
-            reject(err);
-          });
-
-          fetch.once("end", async () => {
-            console.log(`[EmailImport] Finished fetching emails for user ${config.userId}`);
-
-            // Le flux IMAP peut se terminer avant les traitements IA asynchrones.
-            // On attend explicitement chaque message avant de le marquer comme lu.
-            await Promise.allSettled(messageTasks);
-
-            if (processedEmailUids.length > 0) {
-              imap.addFlags(processedEmailUids, ["\\Seen"], (err) => {
-                if (err) {
-                  console.error("[EmailImport] Error marking emails as seen:", err);
-                } else {
-                  console.log(`[EmailImport] Marked ${processedEmailUids.length} emails as seen`);
     }
-                imap.end();
+
-                resolve();
+    console.log(`[EmailImport] Finished processing emails for user ${config.userId}`);
-              });
+  } finally {
-            } else {
+    lock?.release();
-              imap.end();
+    if (client.usable) await client.logout().catch(() => client.close());
-              resolve();
+    else client.close();
   }
-          });
-        });
-      });
-    });
-
-    imap.once("error", (err) => {
-      console.error("[EmailImport] IMAP connection error:", err);
-      reject(err);
-    });
-
-    imap.once("end", () => {
-      console.log(`[EmailImport] IMAP connection ended for user ${config.userId}`);
-    });
-
-    imap.connect();
-  });
 }
 
 /**
@@ -545,57 +491,34 @@ async function checkEmailsForPDFs(config: EmailImportConfig): Promise<void> {
  * Returns detailed error message if connection fails
  */
 export async function testImapConnection(config: EmailImportConfig): Promise<{ success: boolean; message: string }> {
+  let client: ImapFlow | undefined;
   try {
     const imapConfig = await buildImapConfig(config);
-
+    client = new ImapFlow({ ...imapConfig, verifyOnly: true });
-    return new Promise((resolve) => {
+    await client.connect();
-      const imap = new Imap(imapConfig);
-      let resolved = false;
-
-      const done = (result: { success: boolean; message: string }) => {
-        if (!resolved) {
-          resolved = true;
-          try { imap.destroy(); } catch {}
-          resolve(result);
-        }
-      };
-
-      imap.once("ready", () => {
     console.log(`[EmailImport] Test connection successful for ${config.emailAddress}`);
-        done({ success: true, message: `Connexion IMAP réussie pour ${config.emailAddress}` });
+    return { success: true, message: `Connexion IMAP OAuth2 réussie pour ${config.emailAddress}` };
-      });
-
-      imap.once("error", (err: any) => {
-        console.error(`[EmailImport] Test connection failed:`, err);
-        let message = `Erreur de connexion IMAP : ${err.message || err}`;
-
-        // Messages d'erreur plus clairs
-        if (err.message?.includes("Invalid credentials") || err.message?.includes("AUTHENTICATE")) {
-          if (config.authMode === "oauth2") {
-            message = "Authentification OAuth2 refusée. Vérifiez que l'application Azure AD a bien la permission IMAP.AccessAsApp et que le consentement admin a été accordé.";
-          } else {
-            message = "Identifiants invalides. Pour Office 365, l'authentification basique est désactivée. Activez le mode OAuth2 et configurez les credentials Azure AD.";
-          }
-        } else if (err.message?.includes("ECONNREFUSED") || err.message?.includes("ENOTFOUND")) {
-          message = `Impossible de se connecter au serveur ${config.host}:${config.port}. Vérifiez l'adresse et le port IMAP.`;
-        } else if (err.message?.includes("certificate") || err.message?.includes("SSL")) {
-          message = `Erreur SSL/TLS lors de la connexion à ${config.host}. Vérifiez le port (993 pour SSL).`;
-        } else if (err.message?.includes("timeout") || err.message?.includes("Timeout")) {
-          message = `Timeout de connexion à ${config.host}:${config.port}. Vérifiez l'adresse du serveur IMAP.`;
-        }
-
-        done({ success: false, message });
-      });
-
-      // Timeout de sécurité
-      setTimeout(() => {
-        done({ success: false, message: `Timeout : impossible de se connecter à ${config.host}:${config.port} dans les 15 secondes.` });
-      }, 15000);
-
-      imap.connect();
-    });
   } catch (error: any) {
-    return { success: false, message: `Erreur : ${error.message || error}` };
+    console.error(`[EmailImport] Test connection failed:`, error);
+    const rawMessage = error?.response || error?.message || String(error);
+    let message = `Erreur de connexion IMAP : ${rawMessage}`;
+
+    if (/AUTHENTICATE|authentication|invalid credentials/i.test(rawMessage)) {
+      message = config.authMode === "oauth2"
+        ? "Authentification OAuth2 refusée. Vérifiez IMAP.AccessAsApp, le consentement administrateur, le service principal Exchange et l’autorisation de la boîte."
+        : "Identifiants invalides. Pour Microsoft 365, utilisez OAuth2 au lieu de l’authentification basique.";
+    } else if (/ECONNREFUSED|ENOTFOUND/i.test(rawMessage)) {
+      message = `Impossible de joindre ${config.host}:${config.port}. Vérifiez l’adresse et le port IMAP.`;
+    } else if (/certificate|TLS|SSL/i.test(rawMessage)) {
+      message = `Erreur TLS lors de la connexion à ${config.host}. Vérifiez le certificat et le port 993.`;
+    } else if (/timeout/i.test(rawMessage)) {
+      message = `Timeout lors de la connexion à ${config.host}:${config.port}.`;
+    }
+
+    return { success: false, message };
+  } finally {
+    if (client?.usable) await client.logout().catch(() => client?.close());
+    else client?.close();
   }
 }
 

todo.md

@@ -717,3 +717,17 @@
 - [x] Bloquer les réimports par empreinte PDF et fiabiliser le traitement IMAP
 - [x] Déployer le correctif anti-réimport et migrer la base de production
 - [x] Appliquer la correction confirmée et vérifier le comptage final
+
+## Audit authentification IMAP Microsoft 365
+- [x] Vérifier la génération du jeton Azure et le format XOAUTH2 envoyé à IMAP
+- [x] Comparer les scopes, permissions et méthode d’authentification aux exigences Microsoft 365
+- [x] Tester la configuration active de production sans exposer les secrets
+- [x] Documenter la cause du refus IMAP et le correctif requis
+
+## Migration import email vers ImapFlow
+- [x] Remplacer la dépendance `imap` par `imapflow`
+- [x] Réécrire la connexion OAuth2, la recherche UNSEEN et la lecture des messages
+- [x] Conserver le traitement séquentiel, le verrou anti-concurrence et le marquage Seen après succès
+- [x] Adapter le test de connexion IMAP et les messages d’erreur
+- [x] Ajouter des tests de non-régression du flux ImapFlow
+- [x] Vérifier TypeScript, tests, build et authentification OAuth2 réelle