On web interface, navigating between messages and folders is not slow, though it's not instant. This makes navigation slower overall. Gmail is faster.

At least, navigating between messages in same folder & thread should be instant.

This would be my main complaint about Protonmail.

I'm using Firefox but in Chrome, there isn't much difference.

I don't have a ton of email in my archive yet, but so far Proton seems massively faster than google's Inbox app. I'm always in favor of optimization, but I just don't see any need for it yet.

If you'd rather let the NSA read your email then what on earth are you doing on ProtonMail?

I have a very old PC, not slow at all.

People using the argument "lol, buy a new computer ololololol" forget that security should not be made inconvenient for people with less money.

I am happy for everyone who has a good machine and can run proton smoothless, but from a developer point of view, protonmail IS slower compared to other providers and it's NOT because of the security/encryption ProtonMail deploys.

There should be at least a light weight option for user who experience problems.

yes it is need, but just deal with it, their could many reason why it is happening. I am aware with it, and yes it is slow , but I don't mind. the reason I could say deal with it, it could be your computer also, and not just proton. many of use are just fine with it, so it could be many issues.

I just deleted a tons of mail and searched some stuff. It was VERY FAST. Maybe you finally buy a new computer, or stop trolling?

there are a 1000 other ways to save time and be more productive

Searching isn’t just slow for me, it often doesn’t return results for emails I know exist with the keywords I’m using. A lot of work needs to be done in this area.

Time is what you pay for the added security of encrypted mail.

A way to delete all emails not just on 1 page would be nice.

Im my case go pretty fast

If everything is encrypted it's gonna be slower than cleartext by definition...

It lags a lot on protonmail. This, combined with lack of my e-mail support is a real pain in the neck.