Comment by general1465

15 hours ago

I am using paid version of Proton Mail and search is working in thunderbird connected to their IMAP/SMTP bridge just alright. But web interface may suck, I did not use the web for a long time.

The web search feature isnt great. With the bridge youre unecrypting the emails and letting Thunderbird have full access so its as good as whatever Thunderbird (or other programs) have implemented.

Proton websearch is by default email title, sender/receiver only. You can enable full body search but Proton will download your emails to your browser so the search is local. They dont support server-side body search. If you have thousands of emails, youll need to download those first.