NaSMail Alternatives

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

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

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.

Visit website paid $19.5 / Monthly (Pro)

Email at its best, new from Basecamp.

paid Free Trial $99.0 / Annually

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

Disposable email address application.

Webmail service. Powered by RainLoop.

NeoMail is a web-based mail client that allows users to access their mail spools and send messages.

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

Open Source

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

Open Source

Save time and scale faster with accessible, secure, and reliable cloud email services. A proven multitenant email solution for telcos and service providers.

freemium $1.3 / Monthly (Per mailbox)

Independent, secure, and easy to use email address.

NOCC is a webmail client written in PHP. It provides webmail access to IMAP and POP3 accounts.

Self-hosted server for the ProtonMail client.