Preview screenshots in supported clients
Test email rendering across supported mobile, desktop, webmail, and native-app contexts. Find layout, image, spacing, and CTA visibility issues before launch.
Preview email across major clients and devices before every send
MailSlurp helps teams run device previews and compatibility checks to catch layout issues, broken links, missing images, and client-specific regressions before campaigns and release messages go live.
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HTML email previews across major client families
Use MailSlurp to compare Outlook, Gmail, Yahoo, Apple Mail, iOS, iPadOS, Android, and browser render targets before customers receive the message.
- Outlook.com
- Outlook Classic
- New Outlook
- Gmail Web
- Gmail Android
- Yahoo
- Apple Mail
- iOS and iPadOS
Client and device previews
Preview delivered emails before customers see them
Review each message across supported email clients and configured render targets, compare results, and inspect the source HTML from one dashboard before a campaign reaches production.
Find issues before your customers
Use configured target sets to compare important client contexts, catch contrast and spacing regressions, and review the same email your app or ESP produced.
Apple Mail
iPadOS Mail
Outlook iOS
Gmail Android
Outlook Android
Outlook Classic
New Outlook
Gmail Web
Outlook Web
Preview and test emails before customers receive them
Use MailSlurp to review real client previews, compare rendering differences, and keep evidence with each launch or release.
Render previews across devices and mailbox clients
Compare how your email appears across providers and devices so layout issues are caught before customers see them.
Compatibility checks for HTML and CSS features
Detect email features and identify compatibility risks for clients and operating systems you care about.
Broken link and missing image detection
Protect important CTAs by detecting 404 links, invalid redirects, and missing assets.
Run email auditTrack rendering drift across repeated sends
Track render outcomes over time and compare before/after template changes to prevent regressions.
See campaign probe