Congratulations! The product looks fantastic. I'm impressed by the UX, and the idea is brilliant.
One thing I noticed is that when I check the subscriptions, it shows me some I've already unsubscribed from. I understand this can be a challenge since it's not easy to track if a user has unsubscribed outside of your platform.
Also, I use many emails in Hebrew, and I'm not sure about how the AI helper will handle that..I guess its a concern for everyone who have mails not exclusively in English.
Hope this feedback is helpful. Good luck!