Email theft?
No more. Keep sensitive data exclusively between you and your intended party.
Security
WEB & MOBILE
Keep your accounts safe on any device at home and at the office — no VPN is required.
LARGE FILES
Send large files right from your email, without third-party software.
Keep all communications private - free from spam and theft. Only emails are those from your closed user group.
Signup Now
The Tunnel
Difference
Tunnel uses a closed email server to keep communications private. You can have confidence that you, your employees, vendors, and clients can communicate without worry. Use your channel to communicate within your closed user group.
Tunnel offers a free month Trial
No Credit Card Required
Start Your Free Trial
Request A Demo
Take a look at Tunnel's features. Get answers to your unique questions, and find out why Tunnel is the right choice for your business. Let us show you how the Tunnel's high-security platform works for all your intra and interoffice email needs.

Contact Us
Have a question? Send us a message and we’ll get right back to you.
Address
300 Delaware Ave, #210
Wilmington, DE 19801