1 Log into your
Mandrill account.
2 From the menu select "Settings > Webhooks" and then click "Add a Webhook".
3 For "Trigger on Events", select the options you would like to receive a trigger for. Note that triggers will always delete the email from your database, so for example, you DO NOT want to receive
any triggers where emails have been sent ok, such as "Message is Sent".
4 In the "Post to URL" box, enter the full url (starting http://) to the following file in your responder installation:
web-hooks/mandrill.php
(http://www.example.com/web-hooks/mandrill.php)
Note: For security, you may rename the above file.
5 Finally, enter a description and then click "Create a Webhook".
Web hook is now set up.