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error 400: grant_type not stated

Status: Open.

#29 In geoffsmith82/GmailAuthSMTP;

· mikerabat opened on Jan 27, 2026

Usage of the /common endpoint is not supported for such applications created after '10/15/2018'.

Status: Open.

#27 In geoffsmith82/GmailAuthSMTP;

· matejovo opened on Jul 16, 2025

Invalid JWT token format

Status: Open.

#25 In geoffsmith82/GmailAuthSMTP;

· cnieblaog opened on May 5, 2025

Attaching a file to an OAuth2 message

Status: Open.

#24 In geoffsmith82/GmailAuthSMTP;

· nigeltodd opened on Apr 16, 2025

Google oAuth2 error Bad credentials

Status: Open.

#23 In geoffsmith82/GmailAuthSMTP;

· BogdanMoisa opened on Mar 7, 2025

Google Sign in "Access blocked" if publishing status is set to "Testing"

Status: Open.

#22 In geoffsmith82/GmailAuthSMTP;

· dcabale opened on Mar 5, 2025

Coping with Stupid users

Status: Open.

#20 In geoffsmith82/GmailAuthSMTP;

· david-navigator opened on Aug 15, 2024

Supporting other scopes for GMail

Status: Open.

#19 In geoffsmith82/GmailAuthSMTP;

· mky300 opened on Sep 30, 2023

Microsoft tenant

Status: Open.

#17 In geoffsmith82/GmailAuthSMTP;

· fhaut opened on Feb 17, 2023

Microsoft Auth

Status: Open.

#15 In geoffsmith82/GmailAuthSMTP;

· p-samuel opened on Dec 2, 2022

O365 - Doesn't Support AUTH or the specified SASL handlers

Status: Open.

#10 In geoffsmith82/GmailAuthSMTP;

· joshlour opened on May 30, 2022

File Not Found System.Net.URLClient

Status: Open.

#8 In geoffsmith82/GmailAuthSMTP;

· daveyPurcell opened on Oct 27, 2021