Source Code is available.
Feel free to adapt the UI in that respect. It's not the backend you need to modify, so it should not be that hard.
Man, the way #Thunderbird opens windows all the same size is clunky... which Dodo decided to make it work that way??
* Glances over at kwin window rules
* Quietly changes window rules to not make ALL window types for Thunderbird the same size
* Whistles awkwardly
2/5 Further, the “native” connection to EWS/OWA within Thunderbird is only available in 140 when you enable a custom setting (search for “ews”). What you see in the new Account Hub will depend on whether that custom setting is enabled.
3/5 Right now, Exchange requires add-ons to work. Usually this means TbSync or OWL. Each of these has its own set of features and limitations to consider. Account Hub will show you Exchange in two flavors… one says “add-on required” and the other doesn’t. It’s the latter one that is the native integration in experimental form at this time (and does email ONLY for now).
5/5 TbSync was a small challenge because, as has happened in the past with major Thunderbird updates, it was declared unsupported and automatically disabled by Thunderbird 140esr. Following the instructions in https://github.com/jobisoft/TbSync/issues/753#issuecomment-3051737579 (file-based reinstall of TbSync and EAS-4-TbSync) resolves the issue for now.
4/5 Until now, I have been using IMAP+SMTP, and TbSync for address books and calendars. After going through a few iterations, I have now settled on using Exchange (native, experimental) accounts (yes, plural) for email and sticking with TbSync for calendars and address books.
1/5 @padraig @thunderbird Took a little searching but I am working again! Yay. The complexity is that which setup to use with Exchange can be legacy (POP3, IMAP+SMTP, EAS, EWS/OWA) or current Graph API. Thunderbird 140 supports all of the legacy API but not yet Graph API.
Mozilla rilascia Thunderbird 140 con nuove funzionalità: dark mode intelligente, sincronizzazione desktop-mobile e supporto sperimentale per Microsoft Exchange. Migliorati anche threading e ordinamento messaggi. #Thunderbird #Mozilla #EmailClient
Our latest Thunderbird Monthly Development Digest is out! We have news about:
* The latest ESR, 140.0 "Eclipse"
* Details about new Exchange Support features
* Updates on Account Hub and the Global Message Database
* Features and Fixes
https://blog.thunderbird.net/2025/07/thunderbird-monthly-development-digest-june-2025/