For the mail application.
Export sends an email with a link to the file. Sends a letter from the mail specified in other application settings
https://take.ms/uO7Sq here
https://take.ms/uiBkIAlso, this mail should be connected in the list
https://take.ms/jVF5P and should work. And this is exactly what my previous comment is about (you need to correctly configure the mail and register it in other settings):
If the mail is on gmail, then
Open Google account management > Security
https://take.ms/WTmN2https://myaccount.google.com/security?gar=1Turn on two-step authentication, after that the App passwords item will appear, in this item you add a password, copy it, paste it into the password. IMPORTANT - you can see this password only when creating, after only generate a new one