I use runbox. Perfect support. A lot of free aliases (100). The only drawback is their UI. The default one is far from "pretty" or ergonomic. You can use a roun

I use runbox. Perfect support. A lot of free aliases (100). The only drawback is their UI. The default one is far from "pretty" or ergonomic. You can use a roundcube interface and gpg, but I must confesse the protonmail interface is way faster and eyecatching.