Wow, I thought every email program had that! I haven't blocked anyone often, but the times I did it was definitely necessary. Does 'started' mean it's in the works now? I hope so. All that said, I do love Proton, and especially how they continue to work hard to give us what we are asking for. Thanks everyone.

Yes. In Outlook.com, I would select all spam, then click "Block Senders" so I don't receive twice from the same emails.

I would like to be able to block spam sender emails. There's a blacklist section, but I can't add hundreds of emails one by one.

I think we already have a block option by blacklisting emails individually. My only gripe is that we don't have the ability to mass-blacklist stuff. Being able to select emails and click "block" would be nice. Or, not just sent to spam, but also have a block option available. Otherwise, I'm having to spend time typing out a list, then copy/paste to block each one manually.

In Outlook I was able to do this, but their spamfilter's gone down the toilet. I'm actually having my whitelisted email addresses being sent to spam, and vice-versa.

It would be great if proton mail could have a function to completly block unwanted mails. They would be deleted before entering your email address. Because same spam emails are being sent to me all the time.

Protonmail talks about how secure they are and yet they don't allow users to block unwanted emails?!? Pretty lame.

I would like to be able to suppress or spoof your bounce message. It is a metadata leak.

please do asap. tyvm

The beauty about this idea is that it will warn them that this is a very secure email so spammers will not share it as they know its a dead end. after one try they would know with that message not to bother.

Totally brilliant idea

Need to be able to block sender in case email address has been circulated without my permission.

I'm getting sexual solicitation and other messages in my emails. Hushmail has a feature you can make a rule for each sender to block them from sending you anything. I need to stop this, its scary. Thank you.

please do this already

This would be very good!

To protect privacy, proton user can make it appear that his account does not exist to all but those he prefers to get email from. I know hackers have attempted to identify accounts on mail servers by spraying them with likely mailbox names. The proposed option would allow a user to bounce incoming messages (SMTP code 550) unless the sender is on the list of people to whom he has sent messages in the past. If the the PM user wishes to review this list and remove certain people later, he should be able to do so. Optionally, allow limits within 50 recipients (free service) and 300 (paid service).

Blocking email addresses please!

The ability to either block certain email addresses (I have seen someone else mention this part) or to choose to only get emails from people on an allow list (or only contacts in your contact list).

People not cleared to send email could get an auto generated email "account not found" or "you are not authorized to send mail to this address. Please note that recipient did not receive your message."

And of course, the email wouldn't come to our inbox, spam box, etc.

Man that would be an awesome feature
There should be a whitelist system too, instead of blocking people, you could setup your account to block everyone by default and unblock them as it's needed

I would expand to enable the ability to block and entire domain, not just a particular sender. In addition, I'd like to be able to apply the same filtering concept on the outbound. For example no emails should be sent to anyone @gmail.com, on the off chance my autocomplete puts the wrong send to address in the to: field

Agreed. This is an essential feature for an email service.

Have protonmail got around to sorting this problem yet ?