Choose your email client

Download Mailbutler from the App Store on your Mac.

Click the "Open" button in the App Store and follow the onscreen installation instructions.

Get Mailbutler for your Outlook desktop app from the Microsoft AppSource and follow the onscreen installation instructions.

Select an email or open the compose window. Then, click the Mailbutler button or the three dots menu in the Outlook toolbar to open the Mailbutler Sidebar and register an account.

Head to Outlook.office.com and log in to your account. Install Mailbutler by following the steps shown here.

Open the compose window or select an email. Then, click the Apps button to open the Mailbutler Sidebar and register an account.

Head to the Chrome Web Store by clicking the button below. Then, click "Add to Chrome" to complete the installation.

Mailbutler for Gmail is only available as a Chrome extension.

Click the Mailbutler button in the toolbar to the right of your Gmail inbox to open the Mailbutler Sidebar and register an account.