Mail Not Responding after Sequoia 15.4 upgrade

Upgraded to Sequoia 15.4 today, now Mail will not open on MacBook Pro. Comes up as Not Responding. I cannot find any other report of this. Have tried multiple fixes to no avail. Anyone seen this, knows how to fix?

MacBook Pro 14″, macOS 15.4

Posted on Apr 2, 2025 9:11 PM

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Posted on Apr 8, 2025 3:04 AM

WORK AROUND & FIX:


You need to change the 'Check spelling' feature.


If, 'Check Spelling: When I Click Send' is currently selected.


You need to change it to either 'As I Type' or 'Never'.


Go To: Mail > Settings > Composing > Check spelling: [change to one of the above]


Confirm one of these new settings are selected, Exit Settings and you'll be good to go.


Apple have confirmed today 8th April 2025 it is a known issue that when sending an email with Spell Check selected as 'When I Click Send' Apple Mail freezes.


Please pass this workaround and fix on to others in other Chats. This issue, since the Sequoia 15.4 [24E248] Upgrade has been driving me nuts!! All good now 👍🏻

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Mail Not Responding after Sequoia 15.4 upgrade

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