The Original Secure Private Email
Before all the followers, before even Gmail, there was Cotse, renamed CodaMail in 2025.
We offer unlimited addresses across 30+ domains. We are designed for maximum flexibility, built using open source software around open standards. We ensure everything is easy to import and export, so that you are never "locked in".
We are easy to use and completely zero knowledge by the same accepted marketing definition of zero knowledge that heavily marketed services created.
But being so flexible means we are closer to the true cryptographic definition because we be removed from the entire decryption process. Then, with stored email, we meet the stringent cryptographic definition of zero knowledge, while they still only meet the weaker marketing definition.
Support for Windows, macOS, iOS, Android, Linux, and More.
Support for desktop, tablet, and phone in 88 languages!
Free 30 day trial - no card, phone, or email required
CodaMail and Cotse are Packetderm, LLC Services
25+ Years of Trust
We have been in continuous operation since 1999. Protecting privacy since way before it was trendy.
Developer Support
All staff must rotate on helpdesk. Get personalized, expert help rapidly, no matter what day it is.
Unlimited Aliases
We started Unlimited Aliases 25 years ago! We've perfected them. Create aliases in over 30+ domains.
Zero Knowledge
AES-256-GCM and PGP encrypted.
We are end-to-end encrypted and zero knowledge.
There is no service that provides more email features or flexibility than we do!
Use us casually for secure, spam free, mail with no data sharing. Use us to securely encrypt key mail and to secure business correspondence. Or use us in a completely Zero Knowledge fashion. We provide the tools and flexibility to build this service to fit your needs.
π Encryption
By default, we zero knowledge encrypt each mail individually prior to storage using AES-256-GCM, headers and all.
We also give you the ability to easily enable automatic zero knowledge PGP encryption with flexibility. You can easily automatically pgp encrypt by alias, filter action, or encrypt all mail while we only possess your private key for this, with no access at all to your private key, and remain completely outside the decryption code path.
We offer zero knowledge end-to-end encryption via PGP and we provide the ability to send encrypted files and messages as secure password protected links.
With us it's your mail, your keys, your choice!
π§ Aliases
This service has full built-in aliasing across over 30 domains included in the price. It does not require a separate aliasing service, something other's charge for by itself.
We built our service around unlimited email addresses. Create unlimited unique addresses, which you choose (they are not randomized), in over 30 different domains or easily use your own private domains. Your own domain(s) will function with all aspects of our service.
Our service enables you to give out addresses on the fly, making them up on the spot when asked for an address, with full control of that address.
We were the first with unlimited aliases over 25 years ago and we have perfected them.
π Sync Calendars, Address Books, and Tasklists
We developed a unique privacy protecting Calendar, Tasklist, and Address book service that is fully compatible with existing CalDAV/CardDAV clients (meaning your phone and other devices can sync with us), and it supports hyper-granular dynamic permissions.
We built a RFC compliant next generation WebDAV server designed from the ground up for privacy. See the whitepaper.
This service allows you to privately share/sync addressbooks, tasklists, and calendars not only with individual private logins, but also individualized dynamic permissions, all while keeping private identifying information that most WebDAV servers give up, secret..
π VPN & SSH
Secure browsing and tunneling for any environment. OpenVPN, Squid, and Socks5 proxies supported.
π Web Hosting
Full cPanel hosting worth $120+/year, included in our most popular plans. Host a wordpress site, a blog, or business presense with ease.
β‘ Quick Setup
30-day free trial, no card required. Accounts are manually processed and are not immediately available. This helps us protect against scammers. Typical setup time within hours.
CodaMail vs Others
Powerful Features
π± Responsive Design
Perfect interface adaptation for desktop, tablet, and phone with optimized layouts for each screen size.
π¨ Complete Customizability
Personalize your interface with layout changes and 40+ color schemes. Make it look like your favorite mail app.
π Country & Language Blocking
Block entire countries or languages at the server level. Block from addresses, domains, and top level domains during the SMTP connection! Once you block, it looks like your address doesn't exist to those you blocked.
π Calendar, Task, & Contacts Integration
Privately Share/Sync your calendars, todo lists, and contacts with your phone, devices, and others with complete privacy. Unique to us. Whitepaper here.
π Secure Link Attachments
Send files or messages fully encrypted on your machine using AES-265-GCM securely as links. Only those you give the password to can decrypt them. Get notified of all downloads. Auto-delete after 24 hours.
β° Deadman Switch
Auto-send messages if you don't log in for N days. Many of us wonder what will happen with our data should something happen to us, this is a way to send out notifications automatically as well as initiate actions such as locking your account or deleting it.
π₯ Email Fetching
Consolidate all accounts. Retrieve your email from other services and even encrypt it upon retrieval. Create identities with SMTP server settings to allow sending via proper SMTP for spf, dmarc, and dkim.
π€ Advanced Filters
Full Sieve support. Create any rule imaginable to filter and direct your mail as you choose.
β° Scheduled Messages
Schedule emails to be sent at any future date and time. Perfect for event reminders too.
π Flexible PGP/GPG Storage Encryption
Choose your encryption level: encrypt all mail, specific aliases or addresses, or trigger encryption by filter rules. Your data, your control.
Experience 25+ Years of Excellence
No credit card. No email required. Just instant access.
Start Your 30-Day Free Trial View Plans & PricingWhy We're Still Here After 25+ Years
- No Venture Capital: We bootstrapped organically, via word of mouth. We have never advertised and we are the only investors. We have no partners and we answer only to our users.
- No Free Tier: Everyone gets premium support and all of our resources are dedicated to our paying subscribers.
- No "Bargain Basement" Price: We are competitive, but we will not cut corners or outsource, so we are not out to be the cheapest. Quality costs, premium support costs, security and abuse protection costs, but keeping all of our domains reliable and deliverable everywhere after decades of use, priceless.
- Standards-Based: Open protocols mean you're never locked in. We are out to provide flexibility in all aspects. We have ensured that everything is easy to import and export in multiple standard formats.
- Transparent Operation: Based on open-source software and operated without marketing hype.
- Personal Touch: While we have had to hire over the years due to expansion, we are still a small team, this gives us development speed and flexibility that large corporations simply cannot provide.
Why have I not heard about you before?
We've never advertised and we don't often make press releases. We simply focus on providing a top notch email service. We've always been no hype, all function. In other words:
"We spend our time perfecting the service, not the sales pitch."
Check out our free trial and find out why a service that has never had to advertise has sustained growth and lasted for over two and a half decades. Fly under the wire with us and experience features and rapid personal service that you simply cannot find elsewhere.
The Truth About Email Encryption
Many providers claim to offer "zero knowledge" or "zero trust" email. These terms have specific cryptographic meanings that no email provider can actually deliver - the constraints are fundamental to how email works, not limitations of any particular service.
We believe in honesty over marketing. We document exactly what we can and cannot see, and we give you the tools to minimize the trust you must place in us:
- Formal Definitions: What zero knowledge and zero trust actually mean in cryptography
- Provider Limitations: Why no email service can deliver these properties
- Maximum-Security Workflow: How to configure your setup for minimum trust
- Honest Assessment: What CodaMail can and cannot protect
Questions? Email us at helpdesk@codamail.com
Operating continuously since January 1999