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Starting this week, some emails (all of them are sent from internal domain) in Outlook shows yellow envelope icon. Opening and reading this email does not make this icon disappear. The only way to get rid of if it is to reply to the email, then the envelope is replaced with arrow.
Is this some new feature, bug or something is wrong iwth our Exchange server?
This is how it looks like in Outlook:
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
I ended up on this thread after a client approached me with the same question yesterday - as of now, we also don't know more.
it seems to indicate messages not replied to yet? once you reply the arrow replaces the envelope
I can't figure out what the envelope even means. It shows on inbox items, mostly internal. As well as everything I send, drafts, etc.
In the case of drafts, it can even be a brand new draft with just my signature:
If you reply or forward a message that has the icon, it gets a new reply/forward icon instead of the envelope.
This was caused by the March Security Update (SU) for Exchange which has now been fixed: Released: April 2024 Exchange Server Hotfix Updates - Microsoft Community Hub. It is not related to your installation of Outlook.
"Outlook doesn't display unread envelope icon after installing Microsoft Exchange Server March 2024 S... (Note: the fix resolves this issue for new messages, after April 2024 HU or later is installed)"
Your Exchange administrator (IT person) will need to install this fix.
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