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MurugananthamD's avatar
MurugananthamD
Copper Contributor
Jul 21, 2025
Solved

Issue: NDR When Running Python File via Microsoft Graph API

Hi everyone, I'm experiencing an NDR (Non-Delivery Report) error when running a Python script that uses the Microsoft Graph API. Here is my current setup: Trial tenant App registered in Azure Por...
office 365
  • Matich3ck's avatar
    Matich3ck
    Jul 25, 2025

    Hi,

    Sending e-mails thru PS/GAPI in trial subscription is by default blocked by Microsoft. Open request ticket from admin 365 portal. They will change it. 

    Brgds,

    Mateusz

Belicke's avatar
Belicke
Iron Contributor
Jul 24, 2025

Ensure that the Graph API has the Mail.Send permission, check the email header format, and avoid NDRs.

MurugananthamD's avatar
MurugananthamD
Copper Contributor
Jul 28, 2025

Hi Belicke​ ,

Yes. I have already added this permission in Azure portal

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