Mail with Attachement is stuck in outbox

An e-mail with a large attachment is stuck in the outbox. Apple Mail hangs (working memory approx. 10GB). Email can only be deleted temporarily. When Apple Mail is restarted, it is back in the outbox.

How can I delete the e-mail permanently?


MacBook Air 13″, macOS 14.1

Posted on Dec 8, 2023 6:51 AM

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Question marked as Top-ranking reply

Posted on Dec 8, 2023 10:07 AM

JUSTOX3000 wrote:

An e-mail with a large attachment is stuck in the outbox. Apple Mail hangs (working memory approx. 10GB). Email can only be deleted temporarily. When Apple Mail is restarted, it is back in the outbox.
How can I delete the e-mail permanently?


Look at your Mail>Settings>General


if "automatically try sending later" is checked here. Uncheck the option and try again deleting your stuck outbox.



if no progress, quit the Mail.app and relaunch it holding the Shift key down and try again




10GB is huge for most any mail server to attach....


Even the special iCloud "Mail drop" feature is limited to 5GB


ref: Add attachments to emails in Mail on Mac - Apple Support

ref: Mail Drop limits


1 reply
Question marked as Top-ranking reply

Dec 8, 2023 10:07 AM in response to JUSTOX3000

JUSTOX3000 wrote:

An e-mail with a large attachment is stuck in the outbox. Apple Mail hangs (working memory approx. 10GB). Email can only be deleted temporarily. When Apple Mail is restarted, it is back in the outbox.
How can I delete the e-mail permanently?


Look at your Mail>Settings>General


if "automatically try sending later" is checked here. Uncheck the option and try again deleting your stuck outbox.



if no progress, quit the Mail.app and relaunch it holding the Shift key down and try again




10GB is huge for most any mail server to attach....


Even the special iCloud "Mail drop" feature is limited to 5GB


ref: Add attachments to emails in Mail on Mac - Apple Support

ref: Mail Drop limits


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Mail with Attachement is stuck in outbox

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