Hi,
Greetings!
Thank you for posting in Microsoft Community.
Based on your description, it seems that your unable to send a letter to a hotmail.com mailbox. We need to investigate this as we did not receive any reports from our internal team any issues related to this. Let's work on this together.
We would like to ask additional information to better understand the situation, such as:
- What email domain are you trying to send this letter? is it to an organization email or not?
- Did you consult any of your contacts/friend if they are experiencing the same issue?
We would like to ask this information first to provide you with the most relevant and concrete answers to this problem.
We look forward for your response!
Sincerely,
Leonardo_Y
Microsoft Community