For example, you'll be able to use Proton to send emails that are password protected, or emails that self-destruct after a set amount of time. As is to be expected, the app offers all the services that are usually included with a high quality email client, on top of a bunch of other specific security features. When opening an account with Proton you'll get 500 MB of free storage space, that you'll be able to increase by making a donation to its developers. Being a Visionary, you get unlimited messages but no bulk emailing, support for 10 domains, multi-user support, encrypted messages, 50 email aliases, early. What's important, though is taking enough time to choose a good password and making sure your back up email account is up to date. When opening an account with Proton youll get 500 MB of free storage space, that youll be able to increase by making a donation to its developers. Creating an account is totally free, and it'll only take you a couple of minutes to make one. Of course, to start to use the app you'll first need to create a Proton email account. The servers for Proton, in fact, are safely guarded in Switzerland protected by all of the toughest Swiss privacy laws. Sent messages are capped at 1000 per month. Proton is an email service developed by workers that used to be at CERN (the European Organization for Nuclear Research), and you can tell. Currently, email storage space is limited to 500 MB (half a gigabyte) with attachments limited to 10 MB.