Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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

Email accounts crash plus size of inbox

more options

Finally I decided to email, hoping for support. I have been using TB for years, and I was very happy, allowing me to have several accounts, and it did work very well till last september, when one of the place where I work *Karolinska Institutet* moved to MFA using OFFICE365. Thunderbird was not authorized anylonger and I had to install OWL. I also had two email accounts on google. Since september therefore, in a regular and frustrating way, I keep losing the email tree when I open thunderbird, meaning all of sudden one or more than account do not show up anymore, or if they show up at starts sometime some of the folders are missing. The only option I have is to first remove the folders in the profile and they reinstall the account. Also for this reason, I try to have constantly TB open, but this is not ideal as it uses a lot of memory.

My inbox's sizes are fairly large, could that be a concurrent cause of the instability, if so shall I move the emails locally (which I do not want) or would be better (of course would be nice to delete some) to create several subfolders in the root?

[email removed from public]

Finally I decided to email, hoping for support. I have been using TB for years, and I was very happy, allowing me to have several accounts, and it did work very well till last september, when one of the place where I work *Karolinska Institutet* moved to MFA using OFFICE365. Thunderbird was not authorized anylonger and I had to install OWL. I also had two email accounts on google. Since september therefore, in a regular and frustrating way, I keep losing the email tree when I open thunderbird, meaning all of sudden one or more than account do not show up anymore, or if they show up at starts sometime some of the folders are missing. The only option I have is to first remove the folders in the profile and they reinstall the account. Also for this reason, I try to have constantly TB open, but this is not ideal as it uses a lot of memory. My inbox's sizes are fairly large, could that be a concurrent cause of the instability, if so shall I move the emails locally (which I do not want) or would be better (of course would be nice to delete some) to create several subfolders in the root? [email removed from public]

Modified by James

All Replies (2)

more options

Hello there rino.belecco. We have read your message. We try to help you.

How did Thunderbird crashed on your system at work? Did it infect other pc s? Are all computers oke?


Greetings Firefox volunteer.

more options

Hello there


My inbox's sizes are fairly large, could that be a concurrent cause of the instability, if so shall I move the emails locally (which I do not want) or would be better (of course would be nice to delete some) to create several subfolders in the root?

That is recommended if that s one of the common issues.


Greetings Firefox volunteer