Update/Addition:
Warning! Stay away from this software. I reached out via email to inquire about the future of the platform and possibly request a refund. Over a week has passed, and I still haven’t received any response! I must emphasize once again that this is an absolute disgrace. Lifetime deals always come with a certain risk, but selling such a deal in June only to deprioritize the project shortly after, while leaving inquiries unanswered for weeks or completely ignoring emails, is unacceptable. Even on LinkedIn (the only other way to contact the owner aside from the support email), there has been no response.

Original review:
The statement "Launch your own ESP (like Mailchimp) and offer it as a paid service to your customers or clients" immediately caught my attention, and I didn’t hesitate to go for the Tier 3 pricing.

However, the first disappointment came when I realized that you can’t actually set up your own version of Mailchimp as advertised – for example, customers aren’t even able to add their own domains, which is a must-have feature. Not wanting to start with a workaround, I kept the project because it looked promising and thought I would check in from time to time to see how it developed.

In the beginning, there was plenty of feedback, but then it suddenly went quiet. Recently, there was finally an update on the direction of the platform, but it was made very clear that the platform is no longer a priority. It seems they overestimated their expectations.

To make such a statement just a few months after raising money through lifetime deals is quite disappointing, and my trust is now gone. I've decided to move on to a competitor. A shame about the money!