Recently, I came across Preveil, which is a service that can provide end-to-end encryption to either your Outlook, Gmail, or Apple Mail email accounts. It’s free, but if you want more storage, obviously, you will need to pay.

It looks very interesting as this could get others to use end-to-end encryption for the emails without having to move to another provider. However, I haven’t really seen any reviews (besides this one from PC Mag) or others expressing their experience with Preveil, so I am unsure if it’s a good service to use or recommend.

Has anyone used it or is familiar with Preveil? Does anyone know if there are similar services to Preveil, preferably those that are open source?