Sent Email is getting rejected by Office 365

Sent Messages suspected as spam

Try to modify your message, or change how you're sending the message, using the guidance in this article: Bulk E-mailing Best Practices for Senders Using Forefront Online Protection for Exchange [https://go.microsoft.com/fwlink/?LinkID=526654]. Then resend your message.

If you continue to experience the problem, contact the recipient by some other means (by phone, for example) and ask them to ask their email admin to add your email address, or your domain name, to their allowed senders list.

Was this helpful? Send feedback to Microsoft [https://go.microsoft.com/fwlink/p/?LinkID=717204].