Acelle: From this page, you can configure your Acelle settings. You can check the connection status, set the API endpoint, and enter the API key. Once the setup is complete, click "Save" to update your settings successfully.
Acelle Mail is a self-hosted, open-source, full-featured and easy-to-use Email Marketing.
Here is the demo link below from the acelle API key.
Link: https://demo.acellemail.com/admin/docs/api/v1
Acelle Mail API Key:
Acelle Mail API employs simple Token Authentication which is also referred to as Bearer Authentication. That is, every Acelle user account has an authentication token. The token must be sent in either the Authorization HTTP header or in the query string URL when making requests to protected resources.
