
(Update: Not yet enabled) The easier option, probably, is to run a manual check for updates in Thunderbird. Download Thunderbird 102 and install/upgrade using it.(Update: Not yet enabled) Force an upgrade to Thunderbird 102 in the client.If you like to get your hands on Thunderbird 102, then you have the following options to install it from scratch or upgrade an existing Thunderbird installation: The release will roll out gradually to the entire population, and it may take weeks before the automatic update kicks in. Thunderbird 102 is available as a direct upgrade for Thunderbird 91.x installations, but the update is not installed automatically on all devices right after release. You may want to check out the full changelog - it is huge! - on the official site. Too many to list, but highlights include option to permanently decrypt OpenPGP messsages, the caching of public keys, an option to refresh key properties from a key server, and that the Key Assistant is enabled by default. If you write in multiple languages, you will benefit from this, as you no longer have to switch the email language whenever you write in another language to get spell checking to work.

Also, support for importing SQLite address books and CSV addressbooks with semi-colon delimited files. The import tool has been improved, making it easier than ever to import data from other Thunderbird installations, Outlook or SeaMonkey. Even better, you may assign colors to folders just by right-clicking on the folder, selecting properties, and picking a new color. To better distinguish between folders, new icons and colors are used. The address book has a new look and feel, and supports new information fields among other improvements. The address book is fully compatible with vCard, which means that you can import vCards from any application that supports it into Thunderbird.

