Spam spreads quietly
One exposed address can follow you across stores, apps, mailing lists, and data brokers.
Masked email browser extension
Safer signups with masked email.
Cevr builds lightweight privacy tools. Masked Email is a browser extension for Fastmail users who want to create and use masked addresses without exposing their real inbox.
Company
Small privacy tools for everyday email workflows.
Cevr builds small privacy tools for everyday workflows. Our first product, Masked Email, helps people reduce email exposure during signups, trials, newsletters, and account migrations.
Provider-backed
Works with supported masked email providers, starting with Fastmail.
Signup-focused
Designed around the moment you need a masked address in a form.
Built for everyday use
Fast workflows for routine signups, newsletters, trials, and account moves.
Masked Email
Masked Email protects your real inbox.
Masked Email is a browser extension for Fastmail users. It helps generate and insert provider-backed masked addresses faster during signups, without presenting Cevr as your mailbox or email host.
- Create a unique masked address for a signup, service, newsletter, or account.
- Insert the address from the browser workflow without exposing your real inbox.
- Keep site labels and provider-backed restrictions understandable later.
Masked Email
Proposed
river.slate.2047@yourdomain.example
Why it matters
Every signup should not become a permanent doorway.
A personal email address is easy to reuse, hard to take back, and valuable to anyone building lists, tracking users, or reselling contact data.
Tracking gets easier
Reused addresses help connect activity between services that never needed to know each other.
Control comes too late
Unsubscribing is reactive. Provider-backed masked addresses give you a better control point.
Masked Email features
Private by habit, fast by design.
The extension gives everyday signup flows a safer default without turning privacy into a chore.
Fastmail masked addresses
Create provider-backed masked addresses for apps, shops, newsletters, trials, and accounts.
Reduced email exposure
Use a masked address instead of giving every service your personal email address.
Confirm before use
Review the generated address and context before inserting it into a signup form.
Site-aware labels
Keep addresses recognizable with clear labels based on the signup site.
Insertion workflow
Use the extension to fill a masked address without switching tabs or copying manually.
Chromium support
Built for Chromium-based browsers such as Chrome, Edge, and Brave.
Benefits
Use the internet without handing out your permanent inbox.
Less address reuse
Use a different provider-backed masked address for each signup context.
Faster signup flow
Generate and insert masked addresses from the browser instead of managing them manually.
Clearer account history
Labels make it easier to remember why a masked address exists and where it belongs.
How Masked Email works
A safer signup in three steps.
-
Generate a masked address
Create a unique masked address for a signup, service, newsletter, or account.
-
Insert it where you need it
Use the browser extension to fill the masked address without switching tabs or copying manually.
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Keep your real inbox private
If an address starts receiving spam or becomes compromised, disable or replace it through your provider.
Extension settings
Masked Email settings
Polished controls adapted from the extension.
Interface direction
A restrained system for privacy-focused work.
The public site and product preview share Masked Email's calm surfaces, thin borders, compact controls, and readable contrast. The result feels focused, minimal, and built for privacy-first work.
Surfaces
Borders
Fields
Buttons
Focus states
Trust and privacy
Built for people who want less exposure, not more surveillance.
Masked Email is designed around provider-backed masked addresses. Cevr does not provide your mailbox, email hosting, or alias infrastructure.
- Masked Email works with supported provider-backed masked addresses, starting with Fastmail.
- The extension is designed to help create and insert masked addresses, not read your inbox.
- This static website does not include analytics scripts or collect aliases.
- Provider access should be revocable from the connected provider account.
- Release permissions should stay limited to the provider API and browser insertion workflow.
Contact
Questions, partnerships, or support inquiries?
Reach the Cevr team at contact@cevr.io.
FAQ
Questions about Masked Email.
Is Masked Email an email provider?
No. Masked Email is a browser extension. It helps you work with provider-backed masked addresses; it does not host your mailbox.
Which provider does it support?
Masked Email is being built for Fastmail masked addresses first.
Does Cevr see my aliases or inbox?
This website does not process aliases or inbox data. Masked Email is designed to create and insert masked addresses, not read your inbox.
Which browsers are supported?
Masked Email is intended as a Chrome-compatible extension for Chromium-based browsers such as Chrome, Edge, and Brave.
Is there a backend service?
This website is static. The extension is presented as a browser-based workflow for supported provider-backed masked addresses.
How do I revoke access?
Revoke provider access from your connected provider account. For Fastmail, use the connected apps or API token settings in your Fastmail account.