Mailbox.org vs Proton: zero-access encryption, mobile-app, deliverability

Hey team

Just want to check my understanding and the pros and cons before switching to one of the two!

As I understand it, with Proton everything in your mailbox is encrypted such that they couldn’t read it even if they wanted to. With Mailbox, that’s only the case if you upload a private key and password protect it with Guard (or you could use Mailvelope but Guard is perhaps more straightforward if you had log into a browser on another device?) Then you’d use Thunderbird, FairEmail etc with a PGP to unencrypt on those devices

That being the set up, how do both compare in terms of search? If you wanted to search all your emails for something within the body of those emails, which would fare better with a large mailbox?

The main con of Proton (from trying it out lately) is the Android App. It feels incredibly mickey-mouse, limited and slow to load compared to eg. FairEmail which I’ve been using for a couple of months with other accounts - I like how customisable it is eg that I could have certain senders whose emails load remote content/images, while not loading by default; and being able to read emails as very no-frills, unformatted text looks much better to me.

But that’s probably a trivial concern compared to the real unknown for me which is deliverability. I’m primarily looking to move personal emails across, but ideally I could also move across my small-business (sole-trader) email accounts too. But I’d only do that if I had no concerns about deliverability - if there’s any risk that by switching, an email that would previously have gone to a client’s inbox ends up in their junk folder, that becomes a loss of income that makes the whole thing not worth it. My perception is that Proton may be the safer bet in that sense, but is that unfair?

Thoughts appreciated!

In my experience, I’ve never had issues with deliverability of emails when even emailing other companies from my @proton.me domain. But you can always use your business domain with Proton and it will absolutely work. Deliverability is not an issue here.

I also do not have any other concerns you’ve mentioned but you may be thinking and wanting things to be a little different with Proton.

I will say this, if E2EE is not absolute necessary and you can live without it, then I recommend keeping your personal email with Proton if you wanted to and use Fastmail for your business. They are a fantastic provider and have excellent apps and UI/UX overall (way better than Gmail, Mailbox, and the like and even better than Proton in some instances depending on how you use it and manage your emails).

If you’re close to choosing Mailbox, I would push you to Fastmail instead. Try it out for a month and see how you like it. I can all but guarantee you’ll like it more than Mailbox.

If I didn’t need encryption, I’d go with Fastmail but for now, I am using Proton and don’t see myself moving away.

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Full-text search with PGP is a bit of a bummer with Thunderbird in my experience. For one of my mailboxes I use S/MIME to encrypt messages stored on the server instead of PGP mainly for this reason. I am hoping we see a lot of Thunderbird improvements in the future, because the new Thunderbird Pro uses the exact same server setup I use myself, so they should be motivated to support these features better, but for now…

I’d +1 Proton and I still use it for my personal email.

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