TB only Downloads 3 or 4 messages at a time
For the past week or two, TB only downloads 3 or 4 (never more than 4) messages at a time from my Gmail. Now, instead of just starting TB and it downloading all new messages, I have to click Get Messages multiple times to retrieve everything. I have seen similar questions here and the answers have all been variations of blaming the user. So: a) I have not changed any settings. b) It used to download all available messages, whether when TB started up or when I clicked Get Messages. c) Just now on starting TB, it took 6 clicks to retrieve 20 message. They are all text, no attachments, so the total size would be in KB, not MB. d) Using Speedtest, my connection speed is over 300 MB/second so it isn't a connection speed limit on my side. And I doubt it is a speed limitation on Gmail's side.
With all of that in mind, I would appreciate any suggestions of what could be causing the problem and what the fix might be.
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Hello
Hypothesis https://forums.mozillazine.org/viewtopic.php?f=39&t=768895 Are you ? under pop, if yes, try Go to https://mail.google.com and connect. Then, Top right, Settings > See all settings. Click the Forwarding and POP/IMAP tab. Disable POP protocol. Then, at the bottom of the page, click on Save changes. Enable POP protocol. Then, at the bottom of the page, click on Save changes.
I am using Norton Internet Security. My Inbox has about 390 messages (yes, too many). Neither of those has changed for a long time, and were the same several weeks ago when TB would download all available messages.
I wrote a long reply and this forum as usual lost it so here is the TL;DR version.
Disable Norton mail scanning or even perhaps Norton entirely. It is the most likely cause of your issue.
Unfortunately, disabling Norton didn't make any difference. I uninstalled and reinstalled Thunderbird, which also didn't make any difference. My sense is that there must be some deeply-buried setting that I accidentally triggered, but have no idea what it is, where to find it, or how to change it.