More advanced search options, like the ability to search for messages from bob@protonmail.com OR joe@protonmail.ch, kind of like filters, but searches.

Yep im agree with the request also if i understand the concept "Because ProtonMail uses end-to-end encryption, we cannot read any of your messages or attachments, and therefore we currently cannot search through the message body." I would like to have a way to deep search using the browser or the phone app. Develop a encrypted search engine would be mandatory. If I use the search could be because I dont remember where the message is located. I cant search trough all a sender messages finding the info i need...

What about this consideration?

"Keywords search in the body

Every mail (M) opened by the client could be processed clientside to store on a db a map:

crypted(lowercase(*keyword*)) -> *M*.id

The client can search keywords asking to server all the messages ids mapped by crypted(lowercase(keyword)). It would be impossible to understand which plaintext keywords are in a message, right?

Probably an issue can be the space occupied by this db but I guess is not that much considering that usually the biggest part of a usual mailbox are the attachments that will not be indexed. For instance the body of the welcome ProtonMail message is about 6kB or around 270 unique keywords. Every entry should be around 30B . For a 6KB message the overhead would be around 10KB with the simplest design. Using lists, can be even smaller. And this was a message without attachments."

I look forward to more and more robust email search abilities in ProtonMail in the New Year 2018!

Honestly, I wonder why this hasn’t been done already. I can find any emails.

Searching keywords in the message body is imperative for this product to be able to compete with gmail and the like

This is an absolute most have for me. I used my max number of votes on it lol. That's how important it is to me. I've lost a lot of time trying to find emails that a full text search would have be able to find

This is really a must have for me. Please add it asap.

I definitely see it as a race between tutanota and protonmail. Which one gives us text search first!

Can't search for particular text in body messages. Essential missing.

Please speed up the search. It`s really slow to get search results.

I won't use them until they add this feature. I think ProtonMail knows that it is important to most, so I don't think it is a lack of motivation or ignorance. The question here is how to do it. You need to implement client-side indexing. And I guess through JavaScript... And then I guess encrypt the indexes and store them on the server. Then how do you prevent the need for the client to download all the indexes to do a search? Maybe you encrypt the individual index keys which point to encrypted email references...

But again, I can't use this as my primary email until this feature is realized. For now I will look to host my own email.

Protonmail, Don't you realise that all the leading general email services have the Search Email Text feature, with Google winning the war on having one of the preferable email account services - regardless of it's security encryption features?
You will be in a position of strength, the sooner you get your Search Email Text up and running.
Thank You!

Planned when pls? this is fundamental for us to migrate 23 accounts from outlook to protonmail. thanks

I hope this will be implemented in a secure manner with client-side indexing. The index can be either stored in local HTML5 database or stored in encrypted blocks server-side.

When approximately this feature will be implemented?

When will we be able to search for words and phrases in the body of the e-mails? As it is now the search engine is pretty useless and picky.
Combined with the fact that we do not have the ability to intelligently sort into folders or labels (through filters) most of the e-mail is simply lost and impossible to track down once you forget the senders address.

The only reason I had to drop proton mail as my main email address provider, was the lack of this function. I am just waiting for them to find a way to search by text, and I will go back to proton. Any idea when proton will be able to develop this?

http://www.reddit.com/r/ProtonMail/comments/2zks1m/what_features_would_you_like_added_to_protonmail/cs8ajx9

A fundamental feature!!

I have already suggested some time ago this functionality, because searching only the object is frequently not enough.