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Emails deleted from my MacBook don't delete from my iPhone

If I delete an email from my iPhone, it is automatically deleted from my MacBook. Yay! But if I delete an email from my MacBook, it is still on my iPhone. How do I get emails I delete from my MacBook to automatically delete from my iPhone? And PLEASE tell me like I am a complete idiot. I've read some other queries along this line, and I can't understand any of the answers that bandy about terms such as "IMAP" or "synchronized folders". (BTW - this was not a problem until my iPhone automagically updated a week or so ago. Why Apple felt the need to mess up my email is perplexing.)

MacBook Pro 17″, OS X 10.11

Posted on Mar 28, 2021 8:55 AM

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Question marked as Top-ranking reply

Posted on Mar 28, 2021 9:01 AM

This issue is due to the outdated software version you are running on your Mac. I would suspect the same issue would occur if you deleted messages from your Mac. If you are able to I would consider upgrading your operating system.

-How to get older versions of MacOS

https://support.apple.com/en-us/HT211683

2 replies

Emails deleted from my MacBook don't delete from my iPhone

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