Seeking email testing tool recommendations for CMS Made Simple integration

[Arnold31]

Hello,

I'm currently developing a site using CMS Made Simple and am looking to integrate an email testing tool to enhance user and subscriber management. I'm wondering if you have any recommendations for effective plugins or modules for this functionality. Have you had any experiences with email testing tools that integrate well with CMS Made Simple? Any advice on their implementation or tips for optimizing their performance would be greatly appreciated.

Best regards.