Our service is integrated with the MailerLite mailing list service so that you can send special letters to your customers (those who bought products through our service). Or vice versa do not send any specific letters that you do not want your customers to receive.
The first thing you need to do is register an account in MailerLite.
How to do this and how to set everything up correctly, look in the MailerLite knowledge base.
Most likely, you are already using this service to collect emails and mailings, so let's move directly to the integration of MailerLite and smartpayment.pro.
To get started, you need to go to the settings tab: https://smartpayment.pro/app/profile/edit

In the "Integration" tab we find "MailerLite" and activate:

Next you need to enter the API key. It can be taken in your MailChimp account.
Go to "Account Settings" - https://app.mailerlite.com/integrations/api/ in the tab "API keys":

We copy it into the corresponding fields in smartpayment.pro and save:

After that go to the section "Products":

And choose any product. After that go to the tab "Extended Settings":

Below you can see the drop-down mailing list.

You choose the one you need.
After the customer buys this product, he will automatically be subscribed to the "List" of your choice.
There is also a feature that allows you to remove a subscriber from the list after buying goods.


This will give you more flexibility in working with subscribers.
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If you have any questions, please contact support service.
Sincerely, Smart Payment Team!