For plans with more than one user (Family, Duo, etc.) with custom domains, allow setting up aliases in those domains to one or more mailboxes from the plan.
The feature should be available in the Proton Mail settings.
Proton Pass allows setting up aliases, but they are oriented towards hiding the user's identity, so the custom domain is not available.
Max Noé
For plans with more than one user (Family, Duo, etc.) with custom domains, allow setting up aliases in those domains to one or more mailboxes from the plan.
The feature should be available in the Proton Mail settings.
Proton Pass allows setting up aliases, but they are oriented towards hiding the user's identity, so the custom domain is not available.