FairEmail for Android – open source, privacy oriented email that supports OpenPGP and works with virtually all email providers, including Gmail, Outlook (excl non-standard protocols)
You may have OpenPGP encrypted mail that you use on the desktop with Thunderbird or with browser extensions such as FlowMail for GMail (did you know you can send and receive encrypted mail without Google reading it?). Yes on mobile you do get FlowCrypt for GMail, but FairEmail will also operate with any IMAP based...
