Support » Plugin: Post SMTP Mailer/Email Log » Bad Request(invalid_grant)

  • For the last month I have been getting these Bad Request(invalid_grant) notices whenever the system tries to send an email. I cant figure out why it is doing this as the connectivity test says that 587 is open. The diagnostic test shows the following:

    Postman Sender Domain (Envelope|Message): |
    Postman Prevent Message Sender Override (Email|Name): No | No
    Postman Active Transport: SMTP (smtp:tls:oauth2://
    Postman Active Transport Status (Ready|Connected): Yes | Yes
    Postman Deliveries (Success|Fail): 18 | 44

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  • Plugin Author yehudah


    You need to give Google permission again.
    The first link, second column from the left.

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