Alternatives
Alternatives to SimpleLogin
Since the Proton acquisition the free tier has stayed deliberately small. The number is not the interesting part, though — the shared domain is.
Where you are
You are probably running into these
Fifteen aliases, and that is the ceiling
That is a permanent cap rather than a trial allowance. Fill it and the only way forward is paid.
No custom domain on the free tier
You are on official shared suffixes like @simplelogin.com and @aleeas.com; your own domain is a paid feature.
The shared suffix is very well known
Those domains are used by a great many people and are therefore recognised by a great many sites. When one gets blocked it is blocked wholesale, regardless of how you personally use it.
Mechanism
Where shared domains actually bite
Sites identify aliases and disposables mainly two ways: domain blocklists, and MX-record analysis. The first is obvious; the second matters more. A checker looks at where a domain’s MX points, and if it shares mail servers with known alias or disposable services, it gets flagged alongside them even before the domain itself is listed. Which means shared domains share a fate: if anyone in that pool does something a platform dislikes, addresses across the whole pool can stop working on certain sites — through nothing you did. This is not specific to SimpleLogin. Every alias service on a shared suffix works this way, NexMask’s default domain included. There is exactly one way out of the logic: use a domain you own, with its own MX and its own sending history, sharing its fate with nobody. So the real advice here is less “switch providers” than “if being blocked matters to you, use your own domain — wherever you do it”.
What to do
Step by step
- 01
Work out which limit is actually biting
Is it the count, or are the addresses being refused by sites? The answers diverge completely: the first needs a bigger allowance, the second needs your own domain.
- 02
Get a domain of your own
A domain costs a few dollars a year and is the only complete answer to wholesale blocking. NexMask members bind one and issue aliases on it directly.
- 03
Get DNS right before moving addresses
Add the records at your registrar as instructed and confirm the new addresses receive mail, then change the address on each platform.
- 04
Migrate in order of importance
Move the most important account first and watch it for a few days before doing the rest. Keep the old aliases alive as a backstop.
Watch out
Easy things to miss
Shared domains are not one vendor’s flaw
Every alias service’s default suffix faces the same mechanism. What to look for is whether a provider offers the custom-domain path at all — not whether its default domain happens to be unblocked today.
The free allowance is a ceiling, not a trial
Fifteen is the roof of the free plan, not a trial window. Plan against that number rather than expecting it to lift.
Migration does not have to be all at once
The two can run in parallel indefinitely. Put new accounts on the new address and move old ones gradually — lowest risk path.
FAQ
Questions about this case
How many aliases does SimpleLogin give free?
Fifteen, as a permanent cap. The free tier excludes custom domains, leaving the official shared suffixes. The paid tier lifts the count and adds custom domains.
Why does my alias not work on a particular site?
Almost certainly because that site blocked the whole domain, not you specifically. Heavily used shared suffixes end up on these lists. Addresses issued on your own domain do not run into it.
Would switching to NexMask’s default domain fix it?
Possibly in the short term, not dependably in the long term — every shared domain faces the same mechanism. If this matters to you, go to your own domain rather than cycling between shared ones.
What does a custom domain require?
A domain you own plus a few DNS records at your registrar. The domain costs a few dollars a year, and once configured the number of aliases you can issue on it is unlimited.
The features this case uses
Other situations
Start with one address
Free users can take a disposable address with no signup and no phone number. Long-lived aliases and custom domains are for the accounts you intend to keep.