Once Configuration Dialog pops up, change the maximum number of server connections to cache value to three or less. All Mail: contains all the messages of your Gmail account, including sent and archived messages. Any messages that you see in the inbox will also appear in the [Gmail]/All Mail folder. End-to-end encryption (e2ee) makes communications safer against being spied on by third parties. Please refer to the article Introduction to End-to-end encryption in Thunderbird where we explain some of the basics. This information is important and as a helper in the Support Forum, I’m having to tell people it was not included in the design.

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You should get a listing of key IDs that can be used to decrypt the message (encrypted with ... ID ...). Also at this time, if you indicate that you have verified a correspondent's key, Thunderbird will not add your signature to it. This might change in a future version of Thunderbird. Connect a device for data transfer, either a local one such as a USB flash drive, or a remote storage drive. If your Thunderbird installation is corrupted, then Thunderbird issues may occur. No need to worry. This can be easily fixed in most cases by reinstalling the Thunderbird application.Thunderbird 78 allows you to optionally set up the external software called GnuPG for handling your secret keys (for digital signing and decryption of received messages). Then you can import them into Thunderbird. Either use the Add Key and Import functionality in Thunderbird account settings, end-to-end encryption. Or use the global menu bar to open the Tools menu which offers the OpenPGP Key Manager. Use File Import Secret Keys and select the file you have created above. (Both import methods work with secret/private keys, only.) Go to your file manager and open the Mail (or ImapMail) folder per your affected account type (POP or IMAP).

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Lastly, review Google's recommended settings for Thunderbird so that your local actions, such as labelling and deleting, correspond to those which Gmail takes and do not cause any conflicts. Unfortunately, Thunderbird doesn't have a number you can call. Any phone numbers you find online are to third-party support centers. Still Experiencing Troubles with Thunderbird? Last updated on October 24, 2023 Fixing 6 Common Thunderbird Issues Fixing 6 Common Thunderbird Issues

If you are importing from another Thunderbird profile, and your source folder is larger than 2 GB, please use Import from another Thunderbird installation in step 1 and then select Choose a profile folder in step 2 of the import.