27 years providing private email
Private Email, Unleashed.
Built on open standards for true flexibility. Use our modern webmail and/or any email client, calendar, or contacts app; on phone, tablet, or computer. Simple for beginners, powerful for experts, with more features and control than any other service.
We can even be configured to be the closest to Zero Knowledge that any email service can be (even them). You configure it to be exactly what you need. Full control of your email and privacy is yours.
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
Cotse was renamed CodaMail in 2025.
CodaMail and Cotse are Packetderm, LLC Services
25+ Years of Trust
Packetderm, LLC has operated Cotse, now CodaMail, since 1999. Protecting privacy since 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 Encryption.
We are end-to-end encrypted and as close to zero knowledge as email can possibly be
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 Zero Knowledge fashion (as close as e-mail can get to zero knowledge). We provide the tools and flexibility to build this service to fit your needs.
π Encryption
By default, we encrypt each mail individually prior to storage using AES-256-GCM, headers and all. But for maximum security, you can remove us from the cryptographic path entirely.
Generate your own keys using GnuPG, Kleopatra, or GPG Suite on your own machine - we never touch key generation. Upload only your public key - we never possess your private key and cannot decrypt your mail. Use a third-party client like Thunderbird or Mailvelope - software we don't control for decryption. The result: we encrypt incoming mail with your public key, but only you can decrypt it. We are completely removed from the decryption code path.
Auto-encrypt all mail, specific aliases, or by filter action. When correspondents pre-encrypt before sending, we're just a dumb blob store - we never see plaintext at all. Full security guide β
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 presence 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.
Features You Won't Find Elsewhere
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« Two Powerful SMTP-Level Blocking Systems
Alias Control: Disable any address instantly - compromised aliases vanish with a "user unknown" response. Use blacklist mode (default) or switch to whitelist for maximum lockdown.
Details of our unique system
Sender Blocking: Block specific senders, entire domains, or whole TLDs (like .xyz, .ru, .cn). Both systems reject at the SMTP connection - blocked mail never touches our servers and senders can't tell if you exist. Learn more β
π Privacy-Preserving Calendar, Task & Contact Sync
Dual-Random Authentication: Each device/person gets a unique random username + random password pair that reveals nothing about your identity.
Random URLs: Even resource paths are randomized - no account info leaked. Create auth pairs with full method level CRUD permissions. Set expiration dates, revoke instantly. Share your calendar without exposing your account. No other DAV server offers this level of privacy. Setup guide | Whitepaper
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. This is a way to securely send encrypted files to those who don't have encryption, such as a gmail user.
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.
In other words, we can be used as an email client, one that can auto-encrypt fetched mail. The service never sees your IP, send and receive as normail.
π€ Advanced Sieve Filters
Full Sieve filtering with a visual editor or raw script access. Filter by sender, recipient, subject, headers, size, and more. Actions include: move to folder, forward, discard, flag, auto-reply, vacation responses, and our custom PGP Encrypt action - automatically encrypt matching messages with your public key before storage.
β° Scheduled & Delayed Send
Schedule for later: Compose now, send at any future date and time - uses your configured timezone. Perfect for birthday greetings, business hours delivery, or reminder emails. View, edit, reschedule, or delete pending messages anytime. Undo Send: Configure a 5-30 second delay after clicking send - giving you a window to catch mistakes, add forgotten attachments, or cancel entirely. Two ways to control when your mail actually goes out.
π Remove Us From the Cryptographic Path
You generate keys on your own hardware using GnuPG, Kleopatra, or GPG Suite - we never influence key creation. You keep the private key - upload only your public key, we can encrypt but never decrypt. You control decryption - use Thunderbird, Mailvelope, or any PGP client we don't control. Auto-encrypt all mail, specific aliases, or by Sieve filter. When senders pre-encrypt, we're just a blob store that cannot read your mail. Security guide β
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 - combined with 27 years data of 99.9% uptime - 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 get this a lot. We've never advertised and we don't often make press releases. We also do not participate in astroturfing, as some other services do. We simply focus on providing a top notch transparent, well-run, email service and people just eventually find us (especially those who might be a bit more technical and truly see the depth and flexibility of what we offer). We've always been no hype, all function.
"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.
Questions? Email us at helpdesk@codamail.com
Operating continuously since January 1999