MailDecor by Satish Kunwar

Compose brand-colored professional HTML emails and inject them into Gmail & Outlook with 1 click. By Satish Kunwar.

Available on Firefox for Android™

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About this extension

MailDecor is a lightweight, privacy-first email design studio and universal webmail injector designed for both Firefox Desktop and Firefox for Android.

Compose brand-colored, professional HTML emails with 100% inline CSS and inject them directly into your active draft with a single click — no HTML knowledge or external design tools required.

⚡ Universal 1-Click Injection: Seamlessly inserts styled email layouts into active compose windows on Gmail, Outlook Web, Yahoo Mail, Proton Mail, Zoho Mail, AOL, Fastmail, iCloud Mail, GMX, Roundcube, and custom webmails.
📋 Copy Rich HTML: 1-click clipboard copy to easily paste into any desktop client (Apple Mail, Thunderbird) or mobile email apps.
🎨 10+ Brand Presets & Custom Palette: Switch between curated color themes (Nepal, Corporate Slate, Regal Gold, Emerald Luxe, Sunset Amber, etc.) or build your own custom brand palette with real-time color pickers.
✍ Professional Signature Builder: Add your profile photo, designation, website, address, and social links. Includes dynamic phone fields with 1-click WhatsApp highlighting and direct chat links (https://wa.me/...). Empty fields are cleanly hidden.
🖼 Logo & Animated GIF Hosting: Full support for logos (.png, .jpg, .svg) and 60fps animated GIFs (.gif) via universal image proxies (Google Drive, Dropbox, Giphy, Imgur).
🔤 Rich Text Toolbar & Devanagari Unicode: Format fonts, lists, text alignments, and paste formatted text directly from MS Word or Google Docs. Automatically detects Devanagari numbers (१, २, ३) for Nepali & Hindi text.

On Desktop: Seamless toolbar injection directly inside your favorite webmail compose window.
On Android: Fully responsive interface with touch-friendly controls (≥ 40px) and fast clipboard rich HTML copying for mobile email workflows.

100% Offline & Local: Your drafts, templates, and signature configurations are stored strictly on your local device (browser.storage.local).
Zero Telemetry: No tracking, analytics beacons, or remote servers.
Strict Security: Safe DOMParser-based injection with strict CSP and zero raw innerHTML execution.

Developed by Satish Kunwar (satishkunwar.com.np)
*Version 1.1.0 | Manifest V3 *

Rated 0 by 0 reviewers

Permissions and data

Required permissions:

Access your data for sites in the mail.yahoo.com domain
Access your data for sites in the proton.me domain
Access your data for sites in the zoho.com domain
Access your data for sites in the zoho.eu domain
Access your data for sites in the zoho.in domain
Access your data for sites in the mail.aol.com domain
Access your data for sites in the fastmail.com domain
Access your data for sites in the mail.com domain
Access your data for sites in the gmx.com domain
Access your data for sites in the gmx.net domain
Access your data for mail.google.com
Access your data for outlook.live.com
Access your data for outlook.office.com
Access your data for outlook.office365.com
Access your data for mail.yahoo.com
Access your data for mail.proton.me
Access your data for mail.aol.com
Access your data for mail.yandex.com
Access your data for mail.yandex.ru
Access your data for www.icloud.com

Optional permissions:

Access your data for sites in the mail.yahoo.com domain
Access your data for sites in the proton.me domain
Access your data for sites in the zoho.com domain
Access your data for sites in the zoho.eu domain
Access your data for sites in the zoho.in domain
Access your data for sites in the mail.aol.com domain
Access your data for sites in the fastmail.com domain
Access your data for sites in the mail.com domain
Access your data for sites in the gmx.com domain
Access your data for sites in the gmx.net domain
Access your data for mail.google.com
Access your data for outlook.live.com
Access your data for outlook.office.com
Access your data for outlook.office365.com
Access your data for mail.yahoo.com
Access your data for mail.proton.me
Access your data for mail.aol.com
Access your data for mail.yandex.com
Access your data for mail.yandex.ru
Access your data for www.icloud.com

Data collection:

The developer says this extension doesn't require data collection.