I’m writing this blog as I have spent 2 hours trying to setup simple SMTP via sendgrid for a phpBB forum. The documentation was pretty hopeless, so hopefully the below will make someone else’s life easier. The issue was that it wasn’t obvious what to put into the SMTP Username & SMTP Password.

The correct config is:

Use SMTP server for email: = Yes

SMTP server address: =

SMTP server port: = 587

Authentication method for SMTP: = PLAIN

SMTP username: = apikey (just that… i.e. apikey, not YOUR apikey, just the letters “apikey”)

SMTP password: = Your actual API Key from sendgrid

Verify SSL certificate: = Yes

Verify SMTP peer name: = Yes

Allow self-signed SSL certificates: = No

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