We have a fraud decline set for protonmail too, not a gigantic company - but we've had too much fraud from the domain.

It sucks, but it's a very small loss in potential revenue overall.

It increasingly looks like modern email is not really usable. But when looking for an alternative, it's not really there - even with some capabilities missing. It's interesting why.

Surely we can supply HTTP(S) URL-based addresses instead of emails when communicating with people or with flexible enough software. Some inflexible contacts can be coerced. What we need however is a system, preferably known enough to present an alternative.

Malicious actors are among the best aware of security issues and thus concentrate on the services with the highest security grade.

That being the cause of these services being flagged as malicious is... "unfortunate", to stay polite.

They probably got bit by scammers placing orders with stolen credit cards from protonmail accounts. It's an unfortunate problem with trying to be private online. You end up being profiled.

It's not clear how are they "blocking" Protonmail (@sender, MX lookups...), but if they are then that's a very lazy (read: incompetent) workaround and I suggest you try shopping at a competitor who perhaps use a proper anti-fraud solution.

If a corporation of such size deals with abuse by blocking a sender domain name, then their security infrastructure is below poor and it should be an immediate red flag not to trust your sensitive information with them.

Or just use a different email address if you really want a laptop, depending on what your priorities are.

I had a bank not being able to send me emails, a semi big russian provider and maybe some more.

Sucks but well, if they dont want my business, others do.

It may be because their developers are using protonmail to test the system. One easy (not necessarily correct) way of filtering out test orders in production (who does that? :) ) is to filter out your test domain (protonmail). Any real customers using protonmail are therefore out of luck.

Hmm. GitHub is not sending verification emails to my protonmail right now

Semi-related to businesses not doing business with privacy-minded individuals:

Best Buy will cancel your orders after you successfully place them, if you order while using a VPN. They won't tell you why if you call and ask, but it wasn't hard to figure out.

This is so unbelievably sad to me on so many levels.

Get a domain and use that address with protonmail. If you are not paying to PM, you can forward e-mails from your domain to PM.