Hi Michael,
Truly sorry for the experience you are having with Outlook.
I've noticed an increase in instances where certain organization emails fail to deliver to Outlook, possibly due to Microsoft tightening security measures.
Could you tell me how many Email service providers are there who cannot send you email?
Try adding them to a safe sender list and verify. Microsoft recommends doing so in case you are not receiving their emails.
Sign in to Outlook on the web.
- Click Settings (⚙️) > Mail > Junk email.
- Under Safe senders and domains, click + Add.
- Enter the email address (for example,
user@example.com) or domain (for example, example.com).
- Press Enter or click Save.
Just a friendly reminder that this is a user-to-user support forum, so I, in my personal capacity, cannot verify what is wrong.
I’m eager to hear back and work together to find a solution.