Text Expander for Microsoft Outlook

Lightning Assist is a native desktop app — not an Outlook add-in — so your snippets, templates, and AI-assisted rewrites work in Outlook and every other app you use.

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Why use a desktop expander with Outlook?

Outlook add-ins only run inside the mail client. Lightning Assist expands abbreviations system-wide: the same shortcuts work in Outlook, Teams, Word, Excel, the browser, and your terminal.

Canned replies without copy-paste

Save signatures, follow-ups, and troubleshooting steps as snippets. Type your abbreviation, press your hotkey, and the full message is inserted at the cursor — including in the new Outlook experience on Windows and Mac.

FAQ

Does Lightning Assist work with the new Outlook?

Yes. Lightning Assist works at the OS level with desktop Outlook clients on Windows and macOS, including the new Outlook experience where the app is supported on your system.

Is this an Outlook plugin?

No. It's a separate desktop application. That means IT-friendly deployment, fewer conflicts with Outlook updates, and the same snippets everywhere — not only inside email.

Can I try it free?

Yes. Start a 14-day trial with all features — no credit card required.

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