Hi @pfaffman
Thanks for your message.
Unforetunately I faced 2 issues with my SendGrid setup that I did not find the information about.
1- The importance to setup the “Single Sender Verification” email in SendGrind and use the same as the “notification email” into Discourse setup.
2- The relation of the Link Brending in Sendgrid with the confirmation email received from Discourse.
Don’t worrie, sometimes students have to work hard to learn. 