Test across devices
Test email rendering across supported mobile, desktop, webmail, and native-app contexts. Find layout, image, spacing, and CTA visibility issues before launch.
Preview emails on iPhone and Android before every important send
MailSlurp helps teams check mobile email rendering, responsive layouts, images, CTAs, and mailbox-client differences across iPhone, Android, Gmail, Outlook, and Yahoo.
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Mobile previews across real app and device targets
Check iPhone, iPad, Android, Gmail, Outlook, Yahoo, and Apple Mail contexts before important emails reach customers on small screens.
- iOS Mail
- iPadOS Mail
- Gmail Android
- Outlook iOS
- Outlook Android
- Yahoo mobile
- Gmail Web
- Outlook.com
Client and device previews
Preview delivered emails before customers see them
Review the campaign across supported email clients and configured render targets, compare results, and inspect the source HTML before the campaign reaches customers.
Check on every client
Fix issues fast
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 mobile emails before customers receive them
Use MailSlurp to review real client previews, compare rendering differences, and keep evidence with each launch or release.
Validate mobile layouts before launch
Review stacked sections, image scaling, button spacing, and long content on mobile clients before a send reaches customers.
Compare mobile with desktop and webmail
Use one preview run to compare mobile rendering with Outlook, Gmail, Yahoo, and other configured mailbox targets.
Review mobile CTAs before customers tap
Catch content clipping, broken images, weak tap targets, and layout regressions that reduce conversions on phones.
See email auditAutomate checks around template changes
Trigger preview runs from the API when shared templates or product emails change.
Read render API docs