Thanks for your comment!
The official cloud hosted variant currently offers unlimited *@aliasvault.net addresses. However I’ll be adding more domains as time goes on as certain companies don’t always like the idea of aliases and tend to start blacklisting.
The self-hosted variant allows you to attach as many of your own domains that you want, and then you can choose which domain you want to generate an alias with from the GUI.
The ability to connect your own private domains to the cloud hosted variant is also on the roadmap and will be added in the coming 2-3 weeks. This will allow you to move from/to different services without losing access to your email aliases.