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I recently added the Sendgrid add-on to my (free tier) Heroku app and now when I click on it on the add-ons page to open the dasdhboard, I get an error:

Sendgrid dashboard error

I tried opening it with heroku addons:open as recommended at https://help.heroku.com/NQLJHM1C/not-authorized-errors-trying-to-log-into-an-add-ons-sso-using-dashboard and that doesn't work either.

Also, I see this in the logs when I try to send an email through Sendgrid from my Heroku app:

2020-03-15T18:09:24.297453+00:00 app[web.1]: [42e2afe7-65cb-48ef-b6b9-8d08302031bd] Net::SMTPAuthenticationError (535 Authentication failed: account disabled

Any suggestions?

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Jonathan, when you add the send grid add on to Heroku, it creates two environment/config variables.

I suggest that you go to this URL https://app.sendgrid.com/login and try to log in with these credentials.

Your account might be locked because you did not verify your email at sendgrid end, which a required step. Once you do that it should be work.

If you are not able to log in, then there is an issue at sendgrid end and you may need to contact their support.

Heroku Addons

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  • It won't let me log in. It says "You are not authorized to access SendGrid, please contact Support." Except I can't do that because people on the free SendGrid tier aren't allowed to contact support, they can only post questions here on StackExchange. – Jonathan Kamens Mar 16 at 20:04
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I faced totally same problem. In my case, I contacted SendGrid support and asked to activate my SendGrid account. In two working days, they reactivated my account with their apology. And now my app successfully send email. Please try this. Good luck.

Here is SendGrid support: https://support.sendgrid.com/hc/en-us

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