@Tutanota I tried #tutanota and others a while back, but couldn't use it with my old iki.fi forwarding address. I'd want to keep using it, as I've used the same address for 20 years. Is it nowadays possible to keep such "external" sender/reply address?
@ikkeT Thanks for your feedback. You can use your custom domain with Tutanota - if this what you are referring to? https://tutanota.com/support/#custom-domain