Spike Alternatives [Page 5]

Open source, privacy friendly email app

Open Source

Zimbra Desktop is an offline client that lets you manage various email accounts in one desktop tool.  Zimbra mail, Yahoo! mail, Gmail, Outlook and any other work or personal email account using POP or IMAP is easy to set up in Zimbra Desktop.

Work smarter, not harder. Save 1 day/week with free customizable workflows. Get access to 40+ workflow templates such as Employee Recognition & Engagement. Simplify your day-to-day workflows, increase team productivity & add simplicity to your work.

Try for free freemium

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

Chili Piper is an intelligent calendar for Sales teams, to book their own meetings or set appointments for other teams.

World's most secure private messaging App. Unbreakable encryption: best App for secret chat, private calls, text, SMS, video, images, data & file transfer

Skizzle is the most secure way to share end-to-end encrypted files through email, backed by blockchain

Open Source freemium $5.0 / Monthly

Area 1 identifies and prevents advanced socially engineered attacks before they impact your enterprise.

Amazon WorkMail is a secure, managed business email and calendar service.

The most secure calling app. Open Source and Free.

Barracuda Essentials offers advanced Office 365 security features including email scanning, archiving, backup & recovery, and real-time phishing defense.

Fortinet Email security is designed to block ransomware, phishing, and other cyber threats seeking entry via incoming email and outgoing messages don’t improperly leak sensitive data.

Get support for Boxer, learn about support renewals, access the support portal and more.

Calendar is a time-management web application by Microsoft.