Consider working with ProtonMail.com. It can’t get much more secure than this. Please note that while you may be secure in your email practices, if your recipient(s) are not, your emails with them may be compromised.
- Data Security and Neutrality
ProtonMail is incorporated in Switzerland and all servers are located in Switzerland. This means all user data is protected by strict Swiss privacy laws.
- End-to-End Encryption
All emails are secured automatically with end-to-end encryption. This means even ProtonMail cannot decrypt and read your emails. As a result, your encrypted emails cannot be shared with third parties.
- Anonymous Email
No personal information is required to create your secure email account. By default, ProtonMail does not keep any IP logs which can be linked to your anonymous email account. Your privacy comes first.
- Open Source
ProtonMail believes email privacy should be available to all. That’s why their code is open source and basic ProtonMail accounts are always free. You can support the project by donating or upgrading to a paid account.
- Easy to Use
ProtonMail can be used on any device without software install. ProtonMail secure email accounts are fully compatible with other email providers. You can send and receive emails normally.
- Physical Security
ProtonMail’s infrastructure resides in Europe’s most secure datacenter, underneath 1000 meters of solid rock.