Getting the most out of alias.mom
Short, practical guides. Jump to what you need.
Getting started · How aliases work · Replying & sending · Custom domains · If mail lands in spam · Report a site that blocks aliases
Getting started
- Sign up with the inbox you want mail forwarded to. You get an account number. That number is your login, so save it. No name, no password.
- Create your first alias. Give each website its own address. The alias forwards to your real inbox.
- When one alias starts getting spam, turn it off. The rest keep working.
How aliases work (and the reverse-alias)
A site emails your alias, e.g. shop.7f3a@alias.mom. We
forward it to your real mailbox. When you hit reply, your mail goes back
through us: we swap your real address for a reverse-alias, a masked address
that stands in for the sender, so the site only ever sees the alias, never your
real inbox. Two-way masking, both directions covered.
Block a sender any time and mail from them to that alias stops. The alias itself keeps working for everyone else.
Replying & sending as an alias
Just reply to a forwarded message as normal, and it goes out as the alias. To start a new message as an alias (not a reply), use SMTP sending, part of the Everything plan, and plug the settings into any mail client; see the alias's page for the exact host, port, and app password.
Using your own domain
A paid plan lets you receive on your own domain (e.g. you@yourdomain.com).
Add it under Domains and we walk you through the DNS records. The records are the
same idea at every registrar: you're adding an MX record pointing mail to us, plus
SPF/DKIM/DMARC so mail authenticates:
- MX → the mail host we show you (this routes mail to us).
- TXT (SPF/DMARC) → the values we generate, so receivers trust the mail.
- TXT (DKIM) → the signing key we generate for your domain.
NameCheap, Cloudflare, GoDaddy, Gandi, Google Domains. The field names differ slightly but it's the same three record types. The setup page re-checks them live and turns green when they're right.
If forwarded mail lands in spam
Usually it's the original sender's authentication, not us. We re-sign forwarded mail with DKIM aligned to the alias domain. If a specific site's mail is landing in spam, mark one message "not spam" so your provider learns, and check the alias's activity to confirm it was delivered (not bounced). Custom-domain mail depends on your DNS being green on the setup page.
Report a site that blocks our aliases
Some sites wrongly reject alias domains as "disposable" (we're not). Tell us which site and we'll look into rotating to a domain it accepts.