SimpleLogin is genuinely good, so the right alternative depends on why you're leaving. Four reasons account for nearly all of it: you want to stop paying a subscription, you'd rather not be inside Proton's ecosystem, you want something free to start with, or you want attribution rather than just masking. Each points somewhere different — and if none of them applies to you, staying is a reasonable answer.
What you'd be giving up
Worth stating first, because it's a strong product. SimpleLogin Premium is $36/year for unlimited aliases, unlimited custom domains, catch-all, reverse-alias replies, unlimited mailboxes, 5 subdomains, 50 directories and PGP — plus browser extensions and mobile apps, and it's open source. The free tier gives 10 aliases and 1 mailbox. Source: simplelogin.io/pricing. Checked: 2026-08-19.
Any alternative should be judged against that, not against a strawman.
If you want to stop paying a subscription
DuckDuckGo Email Protection is free with no paid tier at all: unlimited private addresses, replies, and email tracker removal. The trade-off is that addresses live on @duck.com.
Firefox Relay gives 50 masks free including tracker removal, and Premium is $0.99/month ($11.88/year) — a third of SimpleLogin's price — with unlimited masks, replies and a Relay subdomain. Source: relay.firefox.com. Checked: 2026-08-19.
Don't SPAM Me has no subscription: unlimited aliases on a domain you own, and the domain is the only cost. You lose reply support and browser extensions.
If you'd rather not be in Proton's ecosystem
SimpleLogin is part of Proton. Some people consider that reassuring; others prefer their alias service unaffiliated with their mail provider, or simply don't want more of their stack with one company.
Unaffiliated options with custom-domain support: addy.io (open source, self-hostable), Fastmail masked email if you already use Fastmail, and Don't SPAM Me.
We haven't read addy.io's or Fastmail's current pricing and feature details from their own documentation, so we're not putting numbers on them. Both are credible; check their own pages rather than trusting a table we haven't verified.
If you want attribution, not just masking
This is where we differ substantively. SimpleLogin hides your inbox extremely well and tells you nothing about what happened to the address afterwards. You can work it out by noticing which alias received the spam — the information is there if you're watching.
Don't SPAM Me does the watching: per-alias spam statistics, an alert naming the new sender's domain when an alias is first contacted by someone other than the original company, and a running list of which companies leaked you. Disabling an alias hard-bounces the sender rather than silently discarding.
If you need a password manager anyway
Proton Pass Plus at $35.88/year bundles unlimited aliases, unlimited custom domains and send-from-alias with a full password manager, 2FA authenticator and dark web monitoring. Almost the same price as SimpleLogin Premium for considerably more surface area — and since it's also Proton, it doesn't solve the ecosystem objection. Source: proton.me/pass/pricing. Checked: 2026-08-19. The $2.99/month headline is a promotional rate.
Quick answer
| Reason for leaving | Go to |
|---|---|
| Don't want to pay anything | DuckDuckGo, or Relay's free tier |
| Want to pay less | Firefox Relay Premium ($11.88/yr) |
| Want no subscription but keep custom domains | Don't SPAM Me |
| Want out of Proton's ecosystem | addy.io, Fastmail, or Don't SPAM Me |
| Want to know who leaked each address | Don't SPAM Me |
| Want a password manager too | Proton Pass Plus (still Proton) |
| Want self-hosting | addy.io |
| Need replies and extensions | Stay — we don't have either |
Before you move
If your SimpleLogin aliases are on your own domain, migrating costs a DNS change and nothing else — the addresses never change, so no account needs updating. If they're on SimpleLogin's domain, you'd have to re-address every account that uses them, which is the expensive case. Why the namespace decides this