"Mail Web Content" using 88GB of RAM on an 8GB machine

100 Watt Walrus wrote:

• A picture's worth 1000 words, and the screenshot below tells almost the whole story, but here are the bullet points:

"Your system has run out of application memory" comes up every 5-10 minutes when Mail is open

• Screenshot shows what we caught it doing — "Mail Web Content" using 88GB of RAM on an 8GB machine

• Mail Web Content disappears down the list after a couple minutes (connected to syncing, I assume)

• Only account is Yahoo Mail — and all its settings are correct

• Sometimes also have a problem where Mail gets stuck "sending XX of YY" or "downloading XX of YY," where the XX is always the 2nd-to-last one (e.g., 19 or 20, never 18 of 20)

I'm stumped. Any thoughts?

I know we can delete the mail accounts and add them back, but this account used to be POP, and now it's IMAP, and because of that we have no idea what would be permanently lost by doing starting over like that, so we'd rather not if at all possible.

Thanks.

https://discussions.apple.com/content/attachment/874bdf80-520d-418d-a419-22ca73f8a535

try a SafeBoot How to use safe mode on your Mac - Apple Support will sort many anomalies