I'm with all the below. I'm seeing new applications and features being deployed constantly, but am waiting for the search function to improve like century's now.

It's way to often that I search for a phrase or a sender and nothing comes up. And then when finding the e-mail manually it shows op like it already should have in the search.

For me actually the same applies as X mentions: If the overall e-mail funtionality does not improve really quickly, it is pretty sure that I'll leave Proton. I've migrated my complete family because of e-mail, drive and pass. Expecting it to work properly. Not for a wallet and other stuff that I don't need.

Proton keeps adding apps..., but all I want is a **good mail client**, with **GOOD SEARCH**.

Please fix these problems:
* Searching is freakingly SLOW, specially if the body is indexed
* No standard field names can be used for searching (like the OP said)
* The list of search results is terrible, breaking up conversations into single emails that I need to click one by one

I might unsubscribe from Proton altogether if SEARCH does not improve.

Please please please make standard search syntaxes part of this. I should be able to search from:”George” and have it return all emails with George in the sender’s name or email, and I should be able to string it together with from:George to:Jess subject:”trip invoice” etc.

Proton has overcome harder issues than client side search. Please put a lot of time into this, it’s a solution that you can reuse for all of your products.

Must-have feature for modern e-mail systems

I have the "Search message content" enabled and message content indexed; however, the search feature is still unreliable -- it misses emails with content including the search words that have been cut and pasted directly from emails. Reliable search is a critical and essential feature of any decent email service.

Here are some additional recommendations for improvements to search:

In "More search options":
- Add a "Email Subject" filter field that uses freeform text
- Add a "Email Body" or "Email Content" filter field that uses freeform text
- Add a "Has attachment" filter field that uses boolean operators
- Add a "Attachment Type" filter field that uses either drop down with predetermined options or freeform text

Yes. I have v1.0.6 on Mac OS and even though there is a feature to "search for keywords in the body of email messages", this is not the case. The search will only search titles and email addresses.

Either the option/ "feature" should be removed or it should actually work. The latter would be great as it is a basic feature of email clients.