Dear all, I'm using Thunderbird 68.4.2 which manages 3 of my email accounts (let's call them A, B and C). Today I tried to link account A to Gmail. Don't ask what happened because I don't even know what I did wrong. In short, I created the link, then I did some tests, but I was not satisfied with the Gmail interface (mainly because I couldn't synchronize the outbox). Therefore, while the entire inbox of account A was not fully synchronized with the inbox of Gmail, I decided to remove the link between account A and Gmail. Then I deleted all messages of account A from Gmail's inbox that were already copied (or just cut and past?). Unfortunately, I realized after finishing the deletions in Gmail that these emails no longer existed in the Thunderbird inbox, and obviously nether on the website of the email provider of account A. Fortunately, I make a backup of my Thunderbird profile from time to time. Unfortunately, the last one was done 1 month ago, but I consider that the loss of this month is not a big problem for account A. However, there are emails from account B that I have received in the past month and would like to keep (Note that account B was not at all concerned by the Gmail connection problem, so I always have for it all my messages from last month and previous). So, here are my questions: How to restore the mails of account A only from the backup of a month ago in order to not to erase the mails of account B received during the last month? Since the link between account A and Gmail is broken, I receive new emails in Thunderbird on account A which are starting to be important. How can I keep them when restoring the backup from a month ago? In case that it is not possible to do so, I temporarily stop the synchronization between Thunderbird and the messaging provider A. Just a hypothetical solution that I think about: suppose I restore the emails of account A only (or at worst of all accounts A, B and C) from the back-up of one month ago while avoiding synchronization with email providers A, B and C. As soon as I authorize synchronization again, will the most recent mails still contained in servers A, B and C be imported into Thunderbird? Reversely, will the emails of accounts A recovered from the backup be synchronized again with the server A? What do you think? Thank you in advance for taking time to help me! I whish you a good end of day. Marjorie