Certainly do not consider this an advertisement, but I bought my new domain through the Google Domains beta and set up the email redirection through their site and it was all pretty trivial to do
I imagine you could do the same with other domain providers, but it might be a bit more low level
Don’t know if this helps, but with gmail, if you have a . in between your name, for example .@gmail.com, you the same email without the . still works. I’ve done it to register new accounts on services that don’t allow multiple email logins, but that I still need to access via my main email. Dropbox for example. New login works and emails go to the same email.
Anarchist
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Also, you can add dots as you please. So abc.def is the same as a.b.c.d.e.f