In Microsoft Graph API for Mail, how to evaluate if a "Send As" or "Send on Behalf Of" address is valid before sending out the email?

Asked Jul 27 '21 at 14:43

Active Aug 27 '21 at 08:30

Viewed 229 times

In a business Microsoft 365/Exchange Online account, users' mailboxes can have "send as" or "send on behalf of" permissions of other mailboxes.

The way this is utilized via Graph API is to set the From the address of a Message to the alternative address for which the user has such permissions on.

However, if the user lacks such permissions, and the Message is attempted to be sent this way, the API will return a 403 Forbidden error with a ErrorSendAsDenied message.

Is there a way to avoid such failures by pre-emptively checking if the specified "send as/send on behalf of" address is valid?

edited Jul 27 '21 at 15:30

asked Jul 27 '21 at 14:43

thankyoussd

1,875
1
18
39

In Microsoft Graph API for Mail, how to evaluate if a "Send As" or "Send on Behalf Of" address is valid before sending out the email?

0 Answers0