Rated 5 out of 5 stars

This basically just works OOB. Solved my major pain point in switching from Mac to Linux to maintain access to my Outlook365 account from work. Sync's email and calendar without a problem.

This review is for a previous version of the add-on (0.7.9.2). 

Rated 5 out of 5 stars

Fantastique! La configuration a prise précisément 3 minutes (comparé au temps requis pour ajuster un POP ou IMAP). Cela fonctionner hyper-bien et je recommande.
Je suis venu à cette solution après que mon administrateur de réseau ait décidé que Outlook 2010 n'avait plus le droit de consulter ma boîte au lettre. Je ne souhaite pas avoir les nouvelles version Microsoft et donc, Thunderbird était l'alternative idéal. Merci à tous.

This review is for a previous version of the add-on (0.7.9.2). 

Rated 5 out of 5 stars

Just installed this add-on by advice from Thunderbird itself.
When I try to add an account from both the account-wizard as the add-on itself. It says there is a problem with my cookie-settings, they ALL have to be enabled.

--- Update: 1 ---
As the developer explained (below here), I quote: "This is not coming from us, but we found that the Microsoft and third party authentication web pages do not work properly, if you restrict cookies".
So they should be:
* Third party cookies: 'Always';
* Save them until: 'They are outdated'.
Note: I had the save them until option on 'Until I close Thunderbird' but is has to be outdated.
There is also NO reason to change other security-settings in Thunderbird.

Now I have no trouble reading my e-mail trough this add-on, so the stars go up!

At https://www.beonex.com/owl/ you can find an e-mail-address for support, there is no FAQ-page which to me comes unhandy, but hey, I'm not the developer of Owl ;o)

--- Update: 2 ---
The main Exchange-calendar/agenda is added automatically when you create a new account.
The same goes for the main address book.
You just have to search for them, as they are created by their default name (which I always rename for personal use and overview).

Note: At the moment of writing, you can only connect tot the main calendar and main address book.

This review is for a previous version of the add-on (0.7.9.2). 

Hi Charlie,

it's true that Owl requires that cookies to be enabled. This is not coming from us, but we found that the Microsoft and third party authentication web pages do not work properly, if you restrict cookies. If you get this message that your cookie settings are not correct, you need to change your settings to accept "All" cookies, "until they expire", and then it should work.

We got many and repeated bug reports from people who complained about having to log in over and over again, and we found out that the cookie settings were the problem. That's why we added this check during setup. We want to make sure that a config that you set up now is also actually going to still work tomorrow. So, this limitation doesn't come from us, but from Microsoft.

We do have a support email address, and we try to answer on a best effort basis. But please consider that we can do any that much for less than 1 USD/month.

Rated 5 out of 5 stars

paid.
I'm using it for a couple of years now and it works great. Guys fixed a couple of minor issue by my request. Can't recommend more

This review is for a previous version of the add-on (0.7.9.2). 

Rated 4 out of 5 stars

This review is for version 0.7.9.2 on Thunderbird 91.4.1. The only add-on I've found that will get Thunderbird connected to my work's Office 365 e-mail. Worth paying for just because of that.

If I were to request any kind of change, I wish there was an option in this add-on to select which services (e-mail, calendar, tasks, etc.) this add-on handled instead of just assuming it should try to connect everything.

This review is for a previous version of the add-on (0.7.9.2). 

Rated 5 out of 5 stars

Incredibly useful

This review is for a previous version of the add-on (0.7.9.2). 

Rated 5 out of 5 stars

Currently using TB91 and have to move from Exquilla to OWL(Eule) for using with Exchange On-Premise Server.
In Exquilla there were setting parameters for auto-configuration throught overriding pref settings (extensions.exquilla.mail.account.*, extensions.exquilla.mail.identity.* etc). Looking forward for adding it to Eule. Currently we have to set up email accounts manually throught plugin internal account setup form. Good plugin. Looking forward for new features in it.

This review is for a previous version of the add-on (0.7.9.2). 

Rated 5 out of 5 stars

The only option available to connect to Office 365 and that works. Only snag that I find is it does not display outlook emails that have been archived. Should have an option to display achieved folders.

This review is for a previous version of the add-on (0.7.9.1). 

Rated 5 out of 5 stars

I have been using owl for roughly two years. I found it really great and reliable.

I am however (slightly) irritated by a minor feature : all events registered via thunderbird or my smartphone agenda are duplicated as soon as the events are sync. I am using TB 78.13.0 with windows 10.
This is not very problematic but slightly irritating.
Am I the only one observing this feature?
Thanks
Benjamin

This review is for a previous version of the add-on (0.7.9.1). 

Rated 5 out of 5 stars

Due to a recent security settings upgrade, I can no longer access my Office 365 mailboxes at work with IMAP, so I now use Owl to access them from Thunderbird. I haven't noticed any issues thus far.

This review is for a previous version of the add-on (0.7.8.5). 

Rated 5 out of 5 stars

The product works very well. Unfortunately, due to company policy, I had to stop using it and have hence asked to stop the subscription.
I was promptly offered a total refund without even being entitled to it. It proves how serious this is. Impressive.
Excellent customer support and an excellent product!
A great combination.
Ale

This review is for a previous version of the add-on (0.7.8.5). 

Rated 5 out of 5 stars

Plug and play support for Office 365. My company wanted everyone to access email through the web app, which completely destroyed my email workflow. Owl put it right back to where it was. Totally worth the nominal price.

This review is for a previous version of the add-on (0.7.8.2). 

Rated 5 out of 5 stars

I works great, no issues at the current moment. Set up was straight-forward. It makes. Useful add-on to Thunderbird.

This review is for a previous version of the add-on (0.7.8.2). 

Rated 5 out of 5 stars

Works exactly as expected, including push notifications when EWS authentication is used. Good support received from the developers when I had a question. Recommended.

This review is for a previous version of the add-on (0.7.7.5). 

Rated 5 out of 5 stars

I've been wanting to merge my Fastmail and Outlook calendars on Thunderbird, but I haven't been able to do so because Outlook doesn't support CalDAV.

I'm glad I found this add-on because now I can have both my calendars in one place!

This review is for a previous version of the add-on (0.7.7.5). 

Rated 4 out of 5 stars

It does what it says on the box. It set up and gave me quick and easy access to my email from O365.

I had some performance issues with server side folders other than my inbox not pre-emptively downloading. I was happy to find calendar support - though it's apparently beta and I had an issue with it not updating a changed instance of a recurring meeting.

I sent the devs an email and they said there's some settings that could possibly fix my perf issue w folders, and they're looking into the calendar bug, but since our admins enabled Oauth2 with IMAP I just switched to that. Since I just bought it, the developer issued me a refund for my trouble!

So, yeah, you may have to dig into the settings if you have a complex setup, but I'd encourage anyone needing Exchange support to give this a try.

This review is for a previous version of the add-on (0.7.7.5). 

Rated 5 out of 5 stars

This tool saved me" It gets me right to company mail in a wink and back. I before that would have to Login Citrix start the desktop and then Outlook just to see who send a note.
Thanks perfect work, Works on all my installations of Thunderbird (WIN10, Linux, RASPIAN)

This review is for a previous version of the add-on (0.7.7.5). 

Rated 5 out of 5 stars

It works!!! It works like a charm. Great addon. Thanks for your work.

This review is for a previous version of the add-on (0.7.7.5). 

Rated 5 out of 5 stars

Add-on läuft einwandfrei und stabil unter Windows 10 und Linux - auch mit EWS als Protokoll und Pushnachrichten.
Server: Exchange 2016.
Jeden Cent der Lizenz wert!

Add-on works fine on Windows 10 and Linux - even with EWS as protocol. Push messages works fine, too. Our company-server is Exchange 2016. Licence is worth every cent. A must have add-on for Exchange-users.

This review is for a previous version of the add-on (0.7.7.5). 

Rated 5 out of 5 stars

Works good if you only have one email account, but if you need Owl for more then one address, it doesn't work. I have multiple licenses for my company, so that is not the issue.

Update - Works great after using EWS on the other accounts. Sorry for the inconvenience.

This review is for a previous version of the add-on (0.7.7.5). 

This is a limitation of the Microsoft protocol, not of Owl itself.
You can try to set up the account using EWS in the Owl settings. EWS allows several accounts at the same time.