HELP! Can't send emails : "Mail wants to sign using key 'privateKey' in your keychain".

This has happened out of the blue and now I am unable to send out any emails. I've done some searching but still have not found a solution. Can any more skilled users help me out?

MacBook Pro 13″, macOS 15.5

Posted on Jul 7, 2025 1:39 PM

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Jul 9, 2025 12:02 AM in response to Brenda Lee

Re: Can't send emails : "Mail wants to sign using key 'privateKey' in your keychain".


Wondering if another discussion thread (link below) on a similar topic, which includes trouble-shooting suggestions from a well-respected Community member, may help you find a solution:.

See: Mail wants to sign using key "privateKey"… - Apple Community


If needed:

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Useful resource for MacOS Sequioa: Mail User Guide for Mac - Apple Support

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More support / info. contact options etc: Mail - Official Apple Support website.

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HELP! Can't send emails : "Mail wants to sign using key 'privateKey' in your keychain".

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