[protonmail]

Thanks for the clarification. We only need to check one more thing - have you activated content search on the Proton Mail desktop app too? Because if you activated it on the web app only, it doesn't apply to the desktop app, it needs to be activated on desktop separately. If you have done so, please report this to us at: https://proton.me/support/troubleshooting?product=mail so we can look into it. Thanks.