Step 1) Click on your username (email address) on the top-right of your VanillaSoft screen.
Step 2) Click the "My Email Account" link to on the left-hand side of the screen.
Step 3) Use the below settings to configure your email account:
Host / Outgoing Mail Server (SMTP): smtp.sendgrid.net
Account Name/User Name: firstname.lastname (the same as your SendGrid profile)
Password: Your email password (your SendGrid profile password)
Use SSL: Yes (checked)
Step 4) Click "Save & Validate Configuration"
That's it! Your SMTP account is now configured.