aMember has a ConvertKit integration built directly into their product!
For questions about how to use it or get access, please contact their customer support team.
How to configure the integration
Go to your aMember dashboard and click Configuration in the left sidebar > Setup/Configuration.
Then, select Plugins on the left.
Search for and activate ConvertKit on the aMember Add-Ons page:
After that, click the gear icon.
Next, copy and paste your ConvertKit API Key and API Secret into the aMember ConvertKit add-on settings. You'll find these in your ConvertKit account's Developer settings.
Click Save.
To connect your sign ups to individual ConvertKit forms, go to aMember CP > Protect Content > Newsletters.