Integrating with MailerLite
Chris Kottom avatar
Written by Chris Kottom
Updated over a week ago

MailerLite is a simple email marketing platform designed for use by all types of businesses that includes features for managing subscribers and automating distribution of targeted content which makes it a terrific tool for staying in touch with your affiliates.

Rewardful lets you integrate with MailerLite to allow you to create and manage mailing list subscribers when new affiliates register for your campaigns, and it's easy to get set up.  Start by clicking the "Integrations" link in the dropdown menu of your Rewardful dashboard, or you can just go directly to

You should see a list of all currently available integrations including one for MailerLite. Find it, and click the "Connect" button to start filling in your information.

Rewardful will need your MailerLite API key to access your account and manage your subscribers.

Your API key is available from the Developer API page of your MailerLite dashboard. Rewardful provides a direct link that page just below the text field.  The location of the API key is highlighted by the red box below.

The screenshot above also highlights your current groups and their IDs which are shown on the same Developer API page in the box framed in blue. The IDs themselves are highlighted.

Rewardful lets you optionally set up campaign-specific and default group IDs that will be applied to new subscribers depending on which campaign the affiliate registers for. The details of how this works are covered in our Campaign Syncing article.

A complete description of how Rewardful will use your group settings can be found in our Campaign Syncing article, so check that out if you'd like more details on this works.

Once you've filled out and submitted the form, you should be ready to start registering new affiliates and targeting email content and campaigns toward them using MailerLite Automations to make sure they're as productive as they can be.

As new affiliates sign up for your program, you should see them replicated as subscribers in your MailerLite account with the first and last name and email address they registered with and as members of any group you specified depending on the campaign they're associated with. Rewardful also adds three additional fields to each subscriber it creates that can help you answer any questions your partners might ask concerning which link to use to access the Rewardful portal and how and where to direct new customers to your site. These will be displayed in the Subscriber Details section of the subscriber screen as shown below.

Let us know if you have any questions or issues connecting your MailerLite account. We're ready to support you!  Just send us an email at or open up a chat session by clicking the icon at the bottom of the page.

Did this answer your question?