Why do you need to setup email transaction service?
You can’t use email marketing service provider like MailChimp or AWeber to send one time emails like email with suggestion (offer). Because each suggestion (offer) is customized.
How To Integrate Mandrill with WP Suggester
If you don’t have Mandrill account then you can get one for free here!
- Go to your WordPress Admin Dashboard.
- Click on WP Suggester Pro Plugin on the bottom left.
- Click on Email Integration.
- Click on Email Transaction Services Provider.
- Enter your Mandrill API Key and click Add Mandrill API Key (see here where you can find API Key).
- You should see API Status changed to Success.
Continue learning here: How To Update Suggestion Emails.