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Read/Unread mail notifications

In Mail 16.0 (3774.500.171.1.1) and on a Mac using mac14.4.1 old mail which had been read a long time ago and also recent mail which I’ve just read is coming up marked as unread. 


Is this a known bug or is it, as feared, just a mistake on my part? 


I’m grateful for any and all suggestions and I’ve already gotten many, unhelpful, ones elsewhere. So in advance thanks. 

MacBook Pro 14″

Posted on May 20, 2024 5:08 PM

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Question marked as Best reply

Posted on May 20, 2024 5:26 PM

That is not likely to be literally caused by versions of Apple Mac Mail.


More likely you have/had mail set up somewhere with POP (which assumes ONE reader) and all should be IMAP (assumes multiple readers). Another weird difference is that POP sends ALL messages to Mail, IMAP sends ONLY Headers, and downloads the rest (or not) when you request them.


IMAP correctly marks a message Read on any device as Read everywhere. POP does not understand that.

3 replies
Question marked as Best reply

May 20, 2024 5:26 PM in response to curly1

That is not likely to be literally caused by versions of Apple Mac Mail.


More likely you have/had mail set up somewhere with POP (which assumes ONE reader) and all should be IMAP (assumes multiple readers). Another weird difference is that POP sends ALL messages to Mail, IMAP sends ONLY Headers, and downloads the rest (or not) when you request them.


IMAP correctly marks a message Read on any device as Read everywhere. POP does not understand that.

Read/Unread mail notifications

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