Office 365 Email – MTDCodes

Much like everyone else in the world, I have multiple communication streams through multiple different emails.

– Oldest Email / Spam Email – This one is the the one I give to businesses, when I’m out and about, and is used as a filter for potential noise.
– Business Email – This one is branded to this domain, I give out for business-y things, and contains all my communications that pertain to side hobbies (ie: CouchBot), etc.
– HOA Email – Yeah yeah .. I’m not a huge HOA fan, but I joined my local one so that I can ensure things don’t go off the deep end.
– Streamer / Content Creation email – For all things Twitch / YouTube / Whatever platform I am doing things on.

Tracking across all of these emails has been .. a little anxiety inducing. I’ve recently decided to reign things in and take control of things. That’s where Thunderbird comes in. It allows me to import and use multiple accounts, customize each accounts signature, purpose, and has some neat add-ons to increase functionality and productivity.

That being said .. I ran into an issue with my Office 365 account. When I’d try to send emails through it, it’d time out and prompt me to re-enter my password. I double checked all my settings:

Outgoing:

host: smtp.office365.com
port: 587
security: STARTTLS
authentication: OAuth2

Confirmed correct credentials

Well, I resolved the issue!

1. Go to https://admin.microsoft.com
2. Go to Users -> Active Users
3. Click on your User account
4. Go to Mail -> Manage email apps
5. Ensure this setting is checked:

Once this was completed – I was then able to successfully send via Thunderbird and my Office 365 tenant.

Tag: Office 365 Email

Unable to send emails through Office 365 via Thunderbird