Thunderbird doesn't support Outlook Web Access (OWA) because it requires WebDAV support, and Thunderbird only supports fetching mail using POP3 and IMAP. This article mentions several extensions that provide OWA support but many users have problems getting them to work. Thunderbird, Entourage, Outlook and Outlook Express support S/MIME. Try using the Exquilla add-on. It uses the Exchange Web Services (EWS) protocol to communicate with MS 365 email accounts. Be aware that that protocol is also on the way to being abandoned for MS Graph, which Thunderbird will hopefully support in future versions. Microsoft definitely wants you to use OWA or the Outlook 365/2019 (desktop) client. OWA is a browser based web app - through the years it has existed plainly as 'Outlook' or 'Outlook on the Web'. It is an email client, similar to the Microsoft Office Outlook, or competing software such as Mac Mail, Mail App and Thunderbird - except accessible from any computer through a web browser. Outlook Web Access (OWA) gives Microsoft Exchange users direct access to their mailbox, calendar, contacts, public folders, and the Global Address List (GAL) using a browser. Thunderbird doesn't support OWA because it requires WebDAV support, and Thunderbird only supports fetching mail using POP3 and IMAP. Outlook Web Access version: 8.0.685.24 Outlook Web Access host name: email.fh-krems.ac.at Exchange Client Access server.NET Framework version: 2.0.50727.235 Microsoft Exchange Client Access server operating system version: Microsoft Windows NT 5.2.3790 Service Pack 2 Microsoft Exchange Client Access server operating system language: en-US.
Loughborough University have recently migrated from Communigate Pro (an email/groupware server that allows access via lots of useful open protocols) to Microsoft Exchange (which doesn't). As a long-time user of Mozilla Thunderbird for email with the Lightning plugin for calendering, I wanted to get things working. This has always been a problem because Exchange doesn't support CalDav or similar, and Thunderbird/Lightning can't talk natively to Exchange. I've found a few solutions to this:
Davmail
I currently use a nifty little program called DavMail. This works by scraping the webmail interface (Outlook Web Access, OWA) and running local servers for various open protocols. I only use the CalDav interface, but it also provides POP/IMAP/SMTP for email and LDAP.For Loughborough users, all you need is the webmail URL: https://email.lboro.ac.uk/owa/
Microsoft Exchange data provider for Thunderbird Lightning
Andrea Bittau and Simon Schubert have recently developed a plugin that makes it all work without having to scrape the webmail site: Microsoft Exchange data provider for Thunderbird Lightning.This works via the new Exchange EWS (web services) interface, so presumably will only work with versions of Exchange which supporting EWS (2007 or later?).
For Loughborough users, you can enter the calendar address as https://LUNETLOGIN@auto where LOGIN is replaced by your username and not the first part of your email address (e.g. https://LUNETmpxxx@auto)
I've only started using this recently, because previous versions would work only immediately after the plugin was installed but not after that. They seem to have fixed that now.
ExQuilla
ExQuilla is another Thunderbird plugin using EWS, although I haven't tried this.Calendering is not available, as far as I could tell. TechRepublic have some decent-looking instructions for setting this up.
1st-setup.nl Exchange EWS Provider
An add-on for Lightning which seems to be well maintained. Thanks to Marcel Stör for pointing this one out.
This extension has also been forked by Mesquilla. The original version doesn't work for me at the moment.
Thunderbird Exchange Activesync
For Loughborough users, the working URL is https://email.lboro.ac.uk/ews/exchange.asmx