How to use this text tool
- Paste the preheader or preview text.
- Select the email client or choose a custom safe limit.
- Review the visible preview, truncation warning, spam hits, and quality score.
#371 · Email & SMS Tools Text Tool
Email Preview Text Checker
Check email preview text length for Gmail, Outlook, Apple Mail, and mobile inboxes. This tool estimates visible preview copy, flags truncation risk, detects spam-heavy words, and gives a practical quality score for stronger email open performance.
Text Input
Paste or upload textchars
Recent History
No history yet.
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What this tool does
The result shows whether your preview text is likely to display cleanly, get truncated, or look spam-heavy in common inbox views.
Length score + truncation risk + spam phrase count + CTA detection + estimated visible preview.
Use this before sending newsletters, promos, launches, transactional emails, or cold outreach campaigns.
Example
Example: “Start saving today with our exclusive summer discount and free shipping.” The tool shows visible copy, remaining safe characters, and whether the message is too long for mobile.
Use cases
- Email campaign QA
- Newsletter preheader checks
- Promotional inbox preview testing
- Mobile email copy cleanup
Tips for better output
- Put the strongest benefit first.
- Avoid repeating the subject line.
- Keep mobile previews shorter than desktop previews.
- Limit hype words such as “FREE” or “urgent”.
Processing details
The tool uses character count, selected client limits, simple visual-width estimation, CTA phrase detection, and spam-risk phrase matching.
Actual inbox rendering can vary by app version, sender name length, subject length, and user screen size.
FAQ
What is the ideal email preview text length?
Most email preview text works best around 40 to 90 characters, with the most important words placed early because mobile inboxes can cut the copy sooner.
Why is my email preview text being cut off in Gmail?
Gmail preview length changes by screen width, sender name, subject length, and device. Shorter preheaders reduce the chance that the main offer is hidden.
Should email preview text repeat the subject line?
Usually no. Preview text should extend the subject line with a benefit, deadline, or context rather than repeating the same wording.
Can emojis make email preview text shorter?
Yes. Emojis can occupy more visual width and may display differently by client, so use them carefully in short preview copy.
How do I write preview text that improves open rates?
Lead with a clear benefit, avoid spam-heavy words, keep the message concise, and make sure the visible part supports the subject line.
Related text tools
Tool modules
| Module | Included |
|---|---|
| Client preview | Gmail, Outlook, Apple Mail, mobile, custom |
| Risk checks | Truncation, spam phrases, repeated spacing |
| Export | TXT, CSV, JSON |
| Score | 0 to 100 preview quality |
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