Недействительный адрес электронной почты

Hello, thank you for reaching out to Microsoft Q&A.

Are you able to send emails from your account?

May I please know if the affected email address is for a personal Microsoft account (e.g., ending in @outlook.com, @hotmail.com, @gmail.com that you created for services like Skype or Xbox, or a work/school account provided by an organization (e.g., ******@company.com)?

• Open any web browser and start an incognito tab.
• Sign in with your Microsoft account here https://outlook.live.com/
• See if you can sign in with your credentials successfully and send emails to other recipients.