Est. January 1999
Built for people with nothing to hide,
but something to protect
Your email address is your identity. Treat it like one.
- Give every website a different address. Disable any one instantly.
- Block unwanted senders before they ever reach your inbox
- Works with the clients you already use. No migration, no new apps.
- Minimize what we, or anyone, can see about you
Simple to start. Powerful when you need it.
Free 30 day trial - no card, phone, or email required
Available in 88 languages | Windows, macOS, iOS, Android, Linux
Cotse was renamed CodaMail March 9, 2025.
CodaMail and Cotse are Packetderm, LLC Services
Most email problems aren't spam. They're exposure.
Ever get spam on an address you only gave to one company? That company sold it. There's nothing you can do about a real address once it's out there.
CodaMail breaks that model. Use a different address for every site. If one gets leaked, sold, or abused, disable it instantly. Your real identity stays untouched.
Already have your own domain? Our SMTP-level blocking works on your existing addresses too. Block senders, domains, or entire TLDs before the message is even accepted, with no migration or new address required.
Most providers cap aliases, filter spam after accepting it, and retain access to your metadata. CodaMail offers truly unlimited aliases, rejects unwanted senders at the connection level before accepting anything, and is built to minimize what we can see in the first place.
"One of the most technically capable consumer email services on the internet."
Unlimited Aliases
Give every website a different address. If one gets leaked or spammed, disable it instantly and senders get "user unknown." We pioneered this over 25 years ago. Create unlimited aliases across 30+ domains, or use your own.
Over 25 Years of Trust
Launched January 1999, before Gmail existed and before privacy was a marketing term. We've operated continuously ever since with no investors, no ads, and no pivot. Just a service that gets better every year.
Rapid Response
Our support really sets us apart.
Receive rapid personalized support any day of the week, including weekends and holidays. We're here when you need us.
Your Keys, Your Mail
AES-256-GCM encryption at rest by default. For maximum privacy, generate your own PGP keys: we encrypt incoming mail, but we literally cannot read it. What "zero knowledge" actually means for email β
π± Responsive Design
Our webmail perfectly adapts to your device with separate interfaces for phone, tablet, and desktop. Easily use your email from anything with a web browser. Webmail is compatible with Mailvelope.
π¨ Complete Customizability
Personalize our webmail with layout changes and 40+ color schemes. Make it look like your favorite mail app with your favorite colors. You can also use your favorite email app.
π§ Multiple Alias Types
Domain Aliases: Your username works across all 30+ included domains. Toggle any on or off; each has its own catch-all subdomain.
Masked Aliases: Create addresses with any name you choose across 30+ domains, fully functional email addresses, each with its own catch-all subdomain.
Auto-Expiring Aliases: Addresses that self-destruct on a specific date (format: YYYYMMDD@domain). Perfect for temporary signups.
Private Domains: Use your own domains with full alias support. Unlimited addresses, subdomain support, and the ability to route aliases to other CodaMail accounts for families or teams.
Mastering aliases β
π Integrated Calendar, Tasks & Notes
Calendar: Multiple calendars with events, invitations, reminders, and recurring entries. Auto-generate birthday calendars, import holidays for 80+ countries, convert emails to events. Full ICS import/export. Syncs live to all devices.
Tasks: Task lists with due dates and priorities. Convert emails to tasks, ICS import/export, live device sync.
Notes: Private notes in Markdown, HTML, or plain text alongside your email. Attach images and PDFs. Send any note as an email attachment in one click. Encrypted at rest.
π« Powerful SMTP-level Blocking System
Alias Control: Disable any address instantly. Blocked senders get "user unknown" and your inbox doesn't appear to exist to them. Switch any alias between blacklist and whitelist mode with per-address exceptions.
Sender & Server Blocking: Block specific senders, entire domains, domain endings (.xyz, country codes), or sending servers. Wildcards supported.
All blocking happens at the SMTP handshake, messages are rejected before your server accepts them, so spammers remove you from their lists automatically.
Learn more β
π Private Calendar, Task & Contact Sync
Connect your devices' native calendar and contacts apps via CalDAV and CardDAV. Works with iOS, Android, macOS, Windows, and Thunderbird. Changes sync instantly both ways.
Each shared device or person gets a separate login that reveals nothing about your account. Share a calendar without exposing your username. Set per-person permissions, expiration dates, and revoke access instantly.
All data encrypted at rest and in transit. CalDAV URLs are anonymized.
Setup guide | Whitepaper
π Block by Language
Filter email by language at the server level. Accept mail only in languages you understand, or block entire languages if you only receive spam in certain character sets. Perfect for international users or anyone tired of foreign-language spam slipping through.
π Secure Link Attachments
Send encrypted files to anyone - even Gmail users who don't have encryption. Your file is encrypted on your computer before upload, then shared as a link. Only people you give the password to can download it. Get notified when someone downloads your file, and it auto-deletes after 24 hours. Perfect for securely transfering private documents.
π₯ Email Hub
Pull email from your other accounts into one place and even encrypt it automatically upon retrieval. Send from those accounts too - replies appear to come from the original address, routed through the proper mail server so your messages are authenticated and don't land in spam. Use CodaMail as a secure hub for all your email without exposing your IP address.
π€ Advanced Mail Filters
Automatically organize incoming mail with powerful filters. Sort by sender, recipient, subject, or message size. Move to folders, forward, delete, flag, set up auto-replies or vacation responses. Plus our unique auto-encrypt action - automatically encrypt specific messages as part of any message filter.
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¬ Restricted POP & IMAP
Control how email apps connect to your account with App Passwords. Create separate passwords for each device, restrict by IP address or location, limit what each can do (receive only, send only, etc.), set expiration dates, and revoke access instantly. Protects against hackers trying stolen passwords.
βοΈ Auto-Reply, Forwarding & Templates
Vacation Auto-Reply: Set start/end dates, reply frequency per sender, and what happens to mail while you're away (keep, discard, or forward).
Filter-Based Auto-Reply: Auto-reply to messages matching specific criteria (sender, subject, or recipient) without a blanket vacation message.
Forwarding: Forward all mail or a copy to another address. Use filters to forward only specific messages.
Quick Responses: Save template replies and insert with one click while composing.
π Flexible Encryption
Encrypted by Default: Every email stored with AES-256-GCM, headers included. No setup required.
Zero-Access Option: Generate your own PGP keys on your own hardware. Upload only your public key. We encrypt incoming mail but literally cannot decrypt it. Only you can, with Thunderbird, Apple Mail, or Mailvelope.
Auto-Encrypt by Rule: Encrypt all mail, only specific aliases, or messages matching filter criteria.
True End-to-End: When senders encrypt before sending, we're just a blob store. Your mail, your keys, your choice.
Security guide β
π Custom Header Control
35+ Headers Stripped: We remove X-Originating-IP, User-Agent, X-Mailer, and dozens more from every outgoing message , stopping recipients from identifying your location, software, or device.
Full Control: Keep specific headers if you need them, add your own, or remove additional ones beyond our defaults. All changes apply at the server level and work with any email client.
π« Ad-Free & Tracking Protection
No Ads, Ever: No ads, no data sales, no attention monetization. Your inbox is yours alone.
Tracking Pixel Blocking: Block remotely hosted images that let senders know when you opened their email.
Read Receipt Blocking: Strip read receipt headers automatically. Senders can't demand to know when you read their mail.
No External Resources: The entire interface loads locally. No calls to Google, no CDNs, no analytics, no telemetry. Nothing phones home.
Verify this yourself β
π‘οΈ Cryptographic Sender Verification
Every sender gets a unique visual avatar based on a cryptographic hash. If someone tries to impersonate a contact you know, their avatar will be completely different - making phishing attempts obvious at a glance. Spot email forgeries before you even read them.
β° Deadman Switch
Automatically send pre-written messages with or without attachments if you don't log in for a set number of days. Useful for notifying loved ones or business partners if something happens to you. Can also automatically lock or delete your account for added peace of mind. Messages and attachments are fully encrypted prior to storage.
π VPN, SSH & Web Hosting
Browse privately with VPN and proxy services that hide your real location. Full web hosting (worth $120+/year) included in popular plans - host WordPress sites, blogs, or personal websites with easy-to-use control panel.
π Quick Setup & Rapid Support
30-day free trial, no card required. Accounts manually processed to protect against scammers (typical setup within hours). All staff rotate on helpdesk - get personalized expert help from the people who actually build the system, any day of the week.
Experience 25+ Years of Excellence
No credit card. No email required.
Start Your 30-Day Free Trial View Plans & PricingWe've been doing this longer than almost anyone still operating
- No Free Tier: Every resource goes to paying subscribers. We tried freemium β it meant free users consumed the support and infrastructure that paying customers deserved. If you're paying for a service, that service should be dedicated to you.
- Standards-Based: Open protocols mean you're never locked in. Everything imports and exports in standard formats. Your data is always yours to take.
- Transparent Operation: Built on open-source software, operated without marketing hype or investor pressure.
- Personal Touch, Serious Infrastructure: Built on robust, redundant systems refined over 25+ years. When you contact support, you reach the people who actually built and run it, not a script reader.
They come for the features and stay for the support
Why have I not heard about you before?
We've never advertised. People find us after trying other services and wanting more. That's been true since 1999.
"We spend our time perfecting the service, not the sales pitch."
It's sort of like a combination of Fastmail, Tuta, and Proton, all in one, but better. I don't really know how to describe it, I don't think there is anything else like it.
Absolutely solid e-mail, way ahead of it's time in 1999, ahead of it's time again in 2025.
A very dependable service, I moved my entire team to it under our own domain without an issue. If we ask support a question, response is fast, including adding things we have suggested. The CodaMail team has been incredible.
Questions? Email us at helpdesk@codamail.com