1 Log into your
SMTP2Go account.
2 From the menu select "Settings > More > Callbacks".
3 Activate ALL callbacks except "Unsubscribe callback".
4 In the "URL of web service" box, enter the full url (starting http://) to the following file in your responder installation:
web-hooks/smtp2go.php
(http://www.example.com/web-hooks/smtp2go.php)
Note: For security, you may rename the above file.
5 Finally, click "Save Changes". The email headers option can be left as is or blank.
Web hook is now set up.