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Sending Emails with Attachments Very Slow Since 128.5.1 Update

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jim265
jim265

It seems that ever since my Thunderbird auto-updated to 128.5.1, sending messages with attachments is VERY slow. I just sent a client an email with a 6.9 MB attachment and it took over 2 minutes to send. A few weeks ago, that would have gotten sent in seconds. I tried cleaning out my Inbox and Sent box by moving most of the messages to local folders, but no change. Any thoughts? Anyone else having this issue?

It seems that ever since my Thunderbird auto-updated to 128.5.1, sending messages with attachments is VERY slow. I just sent a client an email with a 6.9 MB attachment and it took over 2 minutes to send. A few weeks ago, that would have gotten sent in seconds. I tried cleaning out my Inbox and Sent box by moving most of the messages to local folders, but no change. Any thoughts? Anyone else having this issue?

Toate răspunsurile (5)

Googlethunderbird.
Googlethunderbird.

Hello there We have read the question We try to help you.


Have you tried windows to start up in safe mode?


Greetings Firefox volunteer

Wayne Mery
Wayne Mery
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  • Top 10 Contributor

Please see https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems and post your results.

jim265
jim265 Deținătorul întrebării

Many of the diagnosis steps in the link I've either tried already or don't apply to my situation. But I did run Thunderbird in Troubleshoot Mode and it was just as slow sending emails with attachments. I also checked the Task Manager, and I see that TB is the second highest memory hog (behind Google) with 262 MB of memory used. Not sure if that's normal or not.

I tried bypassing TB and using my server (SiteGround) email system. I found one of my recent emails with an 18 MB attachment and forwarded it to my wife as a test. It sent in less than 10 seconds. When I sent that same email the other day through TB, it took almost 2 minutes to send and copy to my Sent folder. So it definitely looks like this is a Thunderbird issue and not an OS or Internet speed issue.

Modificat la de jim265

Wayne Mery
Wayne Mery
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  • Top 10 Contributor

FWIW you can expect sending from a server that already has the attachment on it to be blazing fast. Also, 262 MB is very little memory.

Suggest you run a network speedtest on your PC in the browser and check the upload speed. For example https://www.speedtest.net/

jim265
jim265 Deținătorul întrebării

Upload speed: 17.51 Download speed: 80.87