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IDProjectCategoryView StatusDate SubmittedLast Update
0006180SOGoGUIpublic2026-03-10 16:542026-03-10 16:54
Reporterega Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
Product Version5.12.4 
Summary0006180: HTML emails from Outlook/Word render incorrectly in SOGo webmail (mso-* CSS)
Description

Hello,

We are running SOGo v5.12.4 as webmail for our clients and have identified a rendering issue with HTML emails generated by Microsoft Outlook/Word.

Problem:
Emails composed in Outlook/Word contain proprietary Microsoft CSS properties (mso-*, mso-line-height, mso-margin-top-alt, etc.) that SOGo's HTML viewer does not process.

This results in:

  • Excessive whitespace / broken layout in the message body
  • In some cases, the message body appears completely blank
Steps To Reproduce
  1. Receive an HTML email composed in Microsoft Outlook or Word
  2. Open it in SOGo webmail
  3. Compare rendering with Thunderbird
Additional Information
  • The same .eml file renders correctly in Thunderbird
  • Issue is reproducible across SOGo v5.11 and v5.12 (not a regression)
  • Other webmail clients (Gmail, Outlook Web) also show some degradation, but SOGo is the most affected
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Issue History

Date Modified Username Field Change
2026-03-10 16:54 ega New Issue