Send to Super Productivity — Thunderbird Extension

A Thunderbird MailExtension that sends the currently-displayed email to your Super Productivity inbox as a task with one click.

Features

• Right-click context menu on messages in the message list and compose windows
• Pre-fills the task title with the email subject
• Pre-fills notes with sender, date, message body (configurable), and an optional link to open the email
• Editable confirmation dialog with pre-filled details
• Set scheduled and due dates for tasks
• SP-style dark theme matching Super Productivity's design
• User-friendly error messages when Super Productivity is not running

Requirements

• Thunderbird 115+ (Manifest V3 support)
• Super Productivity v18.1.0+ with Local REST API enabled
  • Open Super Productivity → Settings → Advanced → enable Local REST API
  • Default port: 3876

Installation

Temporary install (development)

1. Open Thunderbird → Add-ons Manager (Ctrl+Shift+A / ☰ → Add-ons and Themes)
2. Click the gear icon → Debug Add-ons
3. Click Load Temporary Add-on…
4. Select the manifest.json file in this directory

Package as .xpi for permanent install

cd sp-thunderbird
zip -r send-to-sp-thunderbird.xpi manifest.json background.js popup.html popup.js options.html options.js icons/

Then in Thunderbird Add-ons Manager: gear icon → Install Add-on From File… → select send-to-sp-thunderbird.xpi.

Configuration

After installing, open extension preferences (Add-ons Manager → extension → Preferences) to:

• Change the API URL (default: http://127.0.0.1:3876)
• Toggle whether the email body is included in task notes

Usage

1. Open an email in Thunderbird
2. Right-click on the message in the list and select Send to Super Productivity
3. A confirmation dialog appears with pre-filled task details:
   • Title: Email subject (editable)
   • Notes: Sender, date, body content, and email link (editable)
   • Scheduled & Due dates: Optional deadline fields (editable)
4. Click Add to Inbox — the task is sent to Super Productivity
5. The dialog closes automatically on success

File structure

sp-thunderbird/
├── manifest.json          # Extension manifest (MV3)
├── background.js          # Context menu registration and task sending logic
├── popup.html             # Confirmation dialog UI (SP-themed)
├── popup.js               # Dialog initialization and submission
├── options.html           # Settings page (optional configuration)
├── options.js             # Settings persistence logic
└── icons/
    ├── icon-32.png        # 32x32 PNG icon (required)
    └── icon-64.png        # 64x64 PNG icon (required)

Building

cd sp-thunderbird
zip -r send-to-sp-thunderbird.xpi manifest.json background.js popup.html popup.js options.html options.js icons/