Hello community,
I like to use osTicket with SendGrid SMTP. Under Admin Panel -> Emails, I enabled Sending Email via SMTP, I filled Email Login Information and all other fields. But when clicking on "SAVE" an I get an error: "authentication failure [SMTP: Invalid response code received from server (code: 535, response: Incorrect authentication data)]"
Meanwhile, I have checked the login and password more than three times. There are definitely correct. Now, I heard that osTicket is not compatible with SendGrid. Is that true? Is there any workaround?

    DigitalForex Now, I heard that osTicket is not compatible with SendGrid. Is that true? Is there any workaround?

    SMTP is SMTP, so I'm not sure where or why you would have heard that or why you would think that.
    I'm not aware of any specific incompatibilities with any SMTP server softwares.
    Can you look at your mail server logs and see if there is any hints there as to what the cause of the failure to auth is?

      3 years later

      I too had the same need:
      Integrate Sendgrid with OsTicket to improve my SPAM reputation and email delivery.

      First, I created the API key for SMTP Relay here: https://app.sendgrid.com/guide/integrate/langs/smtp.
      Secondly, I used the Joomla configuration using port 587 (TLS connections) and it worked perfectly.
      If I use port 465 (for SSL connections) it returns an error and i've not try the 25 port.

      Works on OsTicket 1.16.x

      I attach the links consulted:
      https://docs.sendgrid.com/for-developers/sending-email/joomla
      https://docs.sendgrid.com/for-developers/sending-email/

      3 years later

      Hi, I'm having problems integrating SendGrid with Osticket. Is there a solution?

        bateman

        Since I'm a betting man, I would bet that the Username is supposed to be the email address/username and not "apikey".

        Cheers.

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