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Getting Started

Installation

Installing MailLighter takes less than a minute. This guide covers requirements, installation from Marketplace, and verifying that the add-in is working.

Requirements

Before installing, ensure you have:

  • Outlook Desktop on Windows or macOS, or Outlook on the Web
  • A Microsoft 365 or Exchange account
  • An active internet connection (for installation only, the add-in works offline after that)

MailLighter is not yet available for Outlook Mobile.

Install from Microsoft Marketplace

  1. Open Outlook Desktop or Web
  2. Go to Home → Get Add-ins (or Insert → Get Add-ins depending on your version)
  3. Search for MailLighter in the Store
  4. Click Add to install

The add-in appears in your ribbon immediately. No restart required.

Verify Installation

Once installed, you should see a MailLighter dropdown in the ribbon when composing an email; the MailLighter dropdown may be located under “Apps”. The dropdown menu contains the following 5 features:

  • Keep selection only
  • Remove images
  • Remove attachments
  • Keep 2 replies
  • Full cleanup

If you don’t see the ribbon group, check the Troubleshooting guide.

Sideloading (Developers)

If you want to test a development version or contribute to the project:

  1. Clone the repository:
git clone https://github.com/MailLighter/MailLighter.git
cd MailLighter
  1. Install dependencies:
npm install
  1. Start the development server:
npm start
  1. Sideload the add-in in Outlook following Microsoft’s sideloading guide.

Next Steps