Best HEY Alternatives & Competitors in 2025

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

Key Horde features:

Open Source Wide Range of Features Web-Based Interface Active Community Support

Soverin is the honest email service that doesn’t sell your data.

Key Soverin features:

Privacy-focused Data Ownership Ad-free Encryption

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder. .

Key MailReach.co features:

Deliverability Improving Email Warming Meaningful Warming Content Smart Warming Algorithm

Visit website paid $19.5 / Monthly (Pro)

Mailo is an email client where you can send and receive emails to and from anyone with an email address.

Key Mailo features:

Privacy-focused Ad-free experience Custom domains Environmental commitment

Disposable email address application.

Key InstAddr features:

Anonymity Ease of Use Quick Access Spam Prevention

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Key Mailpile features:

Privacy Focus Open Source User Control Feature-Rich

Open Source

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

Key ProtonMail features:

End-to-End Encryption Zero Access to User Data Swiss Privacy Laws Open Source

freemium €5.0 / Monthly (user - 5 GB)

Webmail service. Powered by RainLoop.

Key Teknik Mail features:

Privacy-Focused Ad-Free Experience Open Source No Tracking

Native email app for email productivity.

Key Polymail features:

User-friendly Interface Cross-Platform Email Tracking Integrations

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Key Gmail features:

Generous Storage Integration with Google Services Powerful Search Functionality Spam and Virus Protection

All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail.

Key Cypht features:

Unified Interface Lightweight Open Source Flexible Configuration

Open Source

Independent, secure, and easy to use email address.

Key Everymail features:

Privacy-Focused Custom Domain Support Ad-Free Experience Cross-Platform Access

Superhuman is an email management tool.

Key Superhuman features:

Speed User Interface Advanced Features Focus

Self-hosted server for the ProtonMail client.

Key NeutronMail features:

Open Source Privacy-Focused Customizability Community Support