How can we help?

Visit the Chrome Web Store and click "Add to Chrome." Once installed, the extension automatically activates when you open Fastmail. Office attachments will show an inline preview option.

Your 7-day free trial starts automatically when you install the extension. No credit card is required. You'll see a trial status indicator in the extension popup.

Click the Connect for Fastmail icon in your Chrome toolbar to open the popup. Enter your license key in the activation field and click "Activate." Your key is emailed to you after checkout.

Connect for Fastmail supports .docx, .xlsx, .pptx, and .rtf files. PDF previews are handled natively by Fastmail.

Check that the file is a supported format. Very large files (over 25 MB) may take longer to render. If the issue persists, try refreshing Fastmail or disabling other extensions temporarily. You can always download the original attachment as a fallback.

No. Documents are processed ephemerally for rendering and are never stored permanently. Preview sessions are discarded after the window is closed or within 24 hours. See our Privacy Policy for details.

Visit your Account page to view your plan, update payment methods, or cancel your subscription.

You can cancel anytime from your Account page. Your access continues until the end of your current billing period. No partial refunds are issued after 14 days.

We offer a full refund within the first 14 days of any paid subscription. Contact us via the support ticket form below and we'll process it promptly.

Your license key was emailed to you at checkout. Check your inbox (and spam folder) for an email from us. You can also find it on your Account page. If you still can't find it, open a support ticket below.

Make sure the extension is enabled in chrome://extensions. Try refreshing Fastmail. If you're using multiple profiles, ensure the extension is installed in the correct Chrome profile.

Fastmail occasionally updates their UI. We monitor for changes and release updates quickly. Make sure your extension is set to auto-update. If the issue persists for more than a day, open a support ticket.

Try disabling other Fastmail-related extensions one at a time to identify the conflict. If you find a specific conflict, let us know via a support ticket so we can investigate.