Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Thunderbird won't show Microsoft Outlook 365/2016 Sent Mail, and Other Issues

more options

Hi; this is a solution and a question.

I'm using Thunderbird Ver. 45.2.0, Windows 10 on a 64-bit Dell laptop, etc. etc. I have 2 school e-mail accounts that are based in Office 365/2016. In both cases, when I decided to untangle myself from any school and use Thunderbird instead, one mail acct. came in as POP, the other as IMAP. My other mail accts. are GMail and web-based for my websites.

Turns out that IMAP [especially w/GMail accts.] DUPLICATES the mail; in other words, there are two Inboxes, one w/the GMail folders and one in the Thunderbird folder. As I fooled around w/the settings, there was a point where any mail written in Thunderbird would not even go out; it said the mail account wasn't authorized to send. I went back into the account settings and looked at the Copies & Folders settings. If you use the 1st option, for some reason it will then recognize that account can send mail. It also creates the appropriate folders for the e-mail acct. This worked for both POPs and IMAPs, and proceeded to import mail from the server up to a point, not all of it. Unfortunately, it does NOT get rid of the duplicate folders. IMAPs also run much slower than POPs.

I guess my question is - how can I make Thunderbird go back and get those additional messages from the Exchange servers? And how can I eliminate the duplicate folder structures in IMAP-based accounts [specifically, the GMail]? Thanks in advance for your response.

TechLadyNow

Hi; this is a solution and a question. I'm using Thunderbird Ver. 45.2.0, Windows 10 on a 64-bit Dell laptop, etc. etc. I have 2 school e-mail accounts that are based in Office 365/2016. In both cases, when I decided to untangle myself from any school and use Thunderbird instead, one mail acct. came in as POP, the other as IMAP. My other mail accts. are GMail and web-based for my websites. Turns out that IMAP [especially w/GMail accts.] DUPLICATES the mail; in other words, there are two Inboxes, one w/the GMail folders and one in the Thunderbird folder. As I fooled around w/the settings, there was a point where any mail written in Thunderbird would not even go out; it said the mail account wasn't authorized to send. I went back into the account settings and looked at the Copies & Folders settings. If you use the 1st option, for some reason it will then recognize that account can send mail. It also creates the appropriate folders for the e-mail acct. This worked for both POPs and IMAPs, and proceeded to import mail from the server up to a point, not all of it. Unfortunately, it does NOT get rid of the duplicate folders. IMAPs also run much slower than POPs. I guess my question is - how can I make Thunderbird go back and get those additional messages from the Exchange servers? And how can I eliminate the duplicate folder structures in IMAP-based accounts [specifically, the GMail]? Thanks in advance for your response. TechLadyNow

All Replies (1)

more options

I don't know the answer to your question about Exchange servers. Regarding Gmail, have you read this? http://kb.mozillazine.org/Using_Gmail_with_Thunderbird_and_Mozilla_Suite Look at the section on IMAP settings. The tip about setting the server directory worked for me.