Email strategy with aliasing and custom domains, tips are welcome

Questions
2

I’m not sure if I really understand your setup, but I’ll tell you what I use/recommend:

1 Proton mailbox, no aliases or custom domains in Proton

Custom domains added to SimpleLogin account:

  • known.com in SimpleLogin
    • Bank 1 gets [random alias x]@known.com
    • Bank 2 gets [random alias y]@known.com
    • Govt 1 gets [random alias z]@known.com
    • Any service you really care about gets [random alias]@known.com basically
    • etc.
  • biz1.com in SimpleLogin
    • [Random alias]@biz1.com for each internet service Biz 1 uses
    • One alias with a good name (or a catch all) @biz1.com to hand out to clients
  • biz2.com in SimpleLogin
    • Same setup
  • SimpleLogin’s alias domains
    • [random alias]@[random domain] for internet services you don’t care about

All these aliases get forwarded to the single Proton mailbox, which has an email address that you never hand out. And you can use filters to organize them by folder based on domain or whatever you want.

(This assumes you want a single mailbox, if you want separate mailboxes for biz1/biz2 you could do that as well I suppose)

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