addy.io has been working great for me for a few years. I've not had them rejected on any site yet. I have the cheapest plan which has been enough for me so far.
this post was submitted on 26 Jun 2026
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Privacy
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I used it on github and that got my account flagged. I had to change it to an email registered to my domain to get my account back to normal. I think there was one other site I had issues with in my years with the service but I can't remember which site it was.
Rejecting temporary email (particularly mailinator but sometimes even hotmail) has been a common thing. Fastmail temporary addresses usually work, but you need a paid fastmail account to get them.
Hi, u should use SimpleLogin or Addy as masked email, those services are Open Source and u use free plan
Addy.IO is so damned cheap and the "premium" domains will be even less likely to get blocked because they are less common.
SimpleLogin has been working for me
Thinking about switching to Addy.io tho
Edit: except for github. I haven't found anything that worked to sign up for github.
Github is just going down the drain in every other way too. Start migrating what you can elsewhere.
I don't even use it, but I needed to get a project from there, and it required logging in. I couldn't manage to register and gave up
I haven’t had issues anywhere with the @duck.com (duckduckgo) masking service.
Samsung rejects them.
I've had a very positive experience with SimpleLogin via ProtonPass. I've only had maybe 2-3 out of 100 sites that rejected a "@passmail.net" address, but took a "proton.me".
I couldn't make accounts on Bluesky and Github with SimpleLogin. Ended up using my Tuta address for bsky. Didn't try another option for Github.
To be honest, they will all land on radars as more their usage grows.
You may want to reach out to support, and let them know that you don't feel okay about them doing this and (if you do) therefore switch to another service provider that doesn't reject alias emails.