The following are settings when using Sendmail for mail delivery. When using Sendgrid, enter your Sendgrid email address as your Default Email Address.

Delivery Method: SMTP
SMTP Authentication Required? Yes
SMTP Port: 587
SMTP Character Set: utf-8
SMTP Security: TLS
SMTP Host:
SMTP Username: apikey <- Just like this.. use the word “apikey”. See the image below.
SMTP Password: [actual api key here]

NOTE: At the top of this email settings page is Default Email Address. This must be set to a Verified Sender Identity within your Sendgrid account. The short version being, this is the email address you’ve setup to work with Sendgrid.

sendgrid settings for idevaffiliate