Microsoft Graph API Send via another mailbox

Question

Hello,

I have several users (so several mailboxes) that I added in Microsoft Azure Active Directory (each user has the necessary rights and a valid License). Thanks to the Microsoft Graph API, I can send emails on Outlook (with the user account connected). It is important to know that each user has a different address and a different password.

The problem is that I want to use the ID or email of a user (other than the logged in user) to send an email with his own mailbox (without going through the logged in user).

Example, here is my Microsoft Azure Directory with my application API and users (Microsoft Graph API for Outlook):

I have an enterprise application with 4 users.

So I have: "User_1", "user_2", "user_3", "user_4".

The user "User_1" is connected to the Microsoft Graph API. I can use any user to send a mail (through the connected user and therefore his mailbox). The mailbox used is the one of the connected user.

==> I would like to choose any user (and not send with the mailbox of the connected user) but with HIS OWN MAILBOX AND MAIL ADDRESS (through the API).

Sincerely.

EDIT: Moved FROM Outlook / Outlook.com / Email TO Microsoft 365 and Office / Other / For business / Other.

Answer 1

Dear Tarbes ILI,

Good day! Thank you for posting to Microsoft Community. We are happy to help you.

I understand that you have a query on Microsoft Graph API Sent via another mailbox.

Based on your concern, I completely understand your scenario and I would like to draw your attention here due to different support scope, would you mind to place this requirement on Microsoft Q&A forum community to get further more information?

Here is the reference link to place your concern: Microsoft Q&A

I would really appreciate your kind understanding.

Sincerely,

Anesu | Microsoft Community Moderator

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