New integrations: Klaviyo, Brevo, Mailchimp, MailerLite, and Polar
We’ve added a new set of integrations to help you automate affiliate onboarding and improve referral tracking across email and payments.
Email platform integrations
Referly now supports new integrations with Klaviyo, Brevo, Mailchimp, and MailerLite.
These integrations make it possible to automatically add affiliates to email lists and trigger email automations when they join your program.

Klaviyo
With the Klaviyo integration, you can:
- Automatically add affiliates to an email list
- Trigger automations for affiliate onboarding and communication
Brevo
With the Brevo integration, you can:
- Automatically add affiliates to an email list
- Trigger automations for affiliate onboarding and communication
- Track referrals who sign up to your email list
Mailchimp
With the Mailchimp integration, you can:
- Automatically add affiliates to an email list
- Trigger automations for affiliate onboarding and communication
- Track referrals who sign up to your email list
MailerLite
With the MailerLite integration, you can:
- Automatically add affiliates to an email list
- Trigger automations for affiliate onboarding and communication
- Track referrals who sign up to your email list
Polar integration
We’ve also added support for Polar so you can track referrals and sales across multiple Polar checkout flows.
Polar Payment Links
Track referrals and sales through Polar Payment Links.

Polar Checkout API
Track referrals and sales through the Polar Checkout API.

Polar Embedded Checkout
Track referrals and sales through Polar Embedded Checkout.

What this unlocks
These integrations make it easier to:
- Automatically onboard affiliates into your email platform
- Trigger automated email flows when affiliates join
- Track referrals who subscribe to your email list
- Track referrals and sales through Polar checkout flows