If you're sending emails and they are going into the drafts folder and stuck with the information below staying sending, then please follow the below steps:
Move the emails from the Draft folder and drag them into the Outbox folder.
Move back from the Outbox folder to the drafts folder and click send.
If you're still facing an issue after following the above then please follow these steps below:
Close and reopen your browser.
Go back to the mail section and try to resend.
If still an issue, go to portal.office.com.
Move the emails from your Drafts folder into Outbox folder and back again then resend.
If you're still having an issue then please raise a new case online and reference the title of this article.
Please include within the ticket the below:
Do any errors show up?
How many emails are stuck?
Is anyone else affected?