Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Email Auto Filler

Email Auto Filler by Kian Paimani

Auto-suggest per-site email aliases for catch-all domains.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Auto-fill email fields with unique aliases based on your catch-all domain. One click to generate per-site addresses and stop spam.

Full description:

Email Filler automatically suggests unique email aliases whenever you click on an email field on any website. Just set your catch-all domain once, and the extension generates site-specific addresses like
netflix@yourdomain.com or amazon_2026@yourdomain.com — no typing required.

Features:
  • Suggests email aliases instantly when you focus any email input field
  • 6 built-in patterns: Simple, Random, Deterministic, Dated, Yearly, and Full Domain
  • Add custom static emails (personal, work, etc.) that appear on every site
  • Enable or disable individual patterns to match your workflow
  • Works on all websites with zero configuration per site
  • Supports dark mode
  • Syncs settings across your browsers
  • Lightweight, no external requests, fully private

How it works:
  1. Set your catch-all mail domain in the extension popup (e.g. yourdomain.com)
  2. Pick which alias patterns you want
  3. Click any email field on any site — a dropdown appears with your aliases
  4. Click to fill

Perfect for privacy-conscious users who use catch-all domains to create unique addresses per service, track who sells your data, and easily block spam at the source.



Feel free to trim or adjust the tone to your liking.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Version
1.0.0
Size
17.6 KB
Last updated
10 days ago (Apr 4, 2026)
Related Categories
  • Privacy & Security
License
Mozilla Public License 2.0
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.