HEY - Email at its best, new from Basecamp.

ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.

InstAddr - Disposable email address application.

mail.com - Email how it is supposed to be: ✔ Free, simple and secure ✔ Manage multiple mail accounts in one place, from any device ✔ Sign up today!

Horde - Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Zoho Mail - Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.