At some point I used to pay for it (I have a costum domain), but then I ran out of money and couldn't pay. I had the old price too, which was 12 Euros a year.

Now I think the price is the same as proton so if I were to pay for email again, I would probably get proton instead, because proton supports GPG and I think tuta doesn't.

In the end it doesn't matter because 100% of my contacts either use gmail, outlook or some business server and I don't know anyone who uses GPG.