Inbox preview simulator

Preview text (also called preheader text) is the first line of text that appears after your subject line in most email clients. It provides additional context about your email and can significantly impact whether someone opens it. We recommend keeping it under 90 characters for optimal display across all devices.

Different email clients have varying display rules and character limits. Gmail typically shows more preview text on desktop, while Outlook has a different layout style. Our simulator helps you see these differences so you can optimize for both platforms and ensure your message looks great everywhere.

For mobile devices, aim for 30-40 characters. For desktop, you can go up to 60-70 characters. However, the most important information should always be at the beginning of your subject line, as it may get cut off on mobile devices.

Mobile inboxes typically show less text and have a more compact layout, while desktop views can display longer subject lines and more preview text. Mobile is increasingly important as over 60% of emails are opened on mobile devices, so always test how your email looks on both.

Yes! Emojis can make your subject line stand out in a crowded inbox and increase open rates when used strategically. However, use them sparingly and make sure they're relevant to your message. Our simulator lets you add emojis and see exactly how they'll appear in different email clients.