Secure Email

ProtonMail

ProtonMail is an end-to-end encrypted email service based in Switzerland.

Kolab Now

Kolab Now is a secure and private collaboration suite offering email, calendar, file storage, and more.

mailbox.org

Mailbox.org is a secure email service that focuses on privacy and data protection.

eGain Mail

eGain Mail is a comprehensive email management software that helps businesses efficiently manage their email communication with customers.

EasyDMARC

MailHippo