I agree with you, I totally understand your point about “beautiful UX/UI vs privacy, privacy win”. That’s the whole point of my question. I currently use Spark because it’s convenient, but I dislike this kind of tool / platform / services and I’m trying to find alternatives. Even if I loose a bit on the “practical” side…

I really like Spark. The only thing that bothers me with Spark is that they have full access to my emails, and it’s not very clear what they’re used for.