
View your Braze campaigns on real email clients
Compare Gmail, Outlook, Yahoo, Apple Mail, iPhone, Android, and dark mode at a glance.
Broken on iPhone? Buried in spam? Catch it before your customers do with MailSlurp inbox placement testing and device previews.

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One delivered campaign reveals what an editor preview can miss.

Compare Gmail, Outlook, Yahoo, Apple Mail, iPhone, Android, and dark mode at a glance.

Spot dead buttons, missing assets, clipped layouts, and awkward mobile stacking before launch.

Fix the friction before it costs a click—or a sale.
See your delivered Braze campaign across iPhone, Android, Windows, Mac, Gmail, Outlook, Yahoo Mail, and Apple Mail—including light and dark mode.

Client and device previews
Review the campaign across supported email clients and configured render targets, compare results, and inspect the source HTML before the Braze send reaches customers.
Choose the clients, send one Braze test, and fix anything that looks wrong.

Pick the email apps, devices, and dark-mode views your customers use.

Send the finished campaign to your MailSlurp render address.

Compare every preview, make the fix, and send with confidence.
Campaign approval
Send render updates to Slack or Microsoft Teams, then open the same shareable result to review Gmail, Outlook, Yahoo, mobile, and dark mode before launch.
# campaign-qa
Email launch reviews · 12 members

Maya
What do you think about these mobile previews?
app.mailslurp.com/device-previews/8edc1b89...

Braze mobile render
iOS Mail · delivered email
Send a separate Braze test to MailSlurp's Gmail, Outlook, and Yahoo seed inboxes. You will see inbox, tab, spam, and missing placement before the lifecycle campaign reaches customers.

Start a new MailSlurp inbox placement test. Copy its marker and current Gmail, Google Workspace, Outlook, Microsoft 365, and Yahoo test addresses.

Add the current recipients to a Braze Seed Group, keep the exact run marker in the message, and launch only to that test group.

Check inbox, tab, spam, and missing results, then review content and sending-domain findings before the full send.
Combine observed mailbox placement with the delivered Braze email, client rendering, sender authentication, and content checks so the next fix is based on evidence.

Confirm whether the campaign reaches inbox, promotions, spam, junk, or goes missing across personal and business mailboxes.

Preview the same delivered email across Gmail, Outlook, Yahoo, Apple Mail, mobile, desktop, light mode, and dark mode.
Track SPF, DKIM, DMARC, MX records, reputation signals, blocklists, and domain changes alongside each send.

Catch broken links, missing images, unsupported markup, and content warnings in the exact campaign sent for preview.
Practical answers for checking a Braze email before the full send.
Create a MailSlurp device preview, choose the clients and dark-mode views your audience uses, and send the finished Braze test email to the render address. MailSlurp then shows the delivered message in every selected client. Follow the Braze device preview guide.
Yes. The preview starts from the delivered test message, including its HTML, hosted images, links, footer, and campaign content.
Yes. Start a separate inbox placement test, use its current test addresses and exact marker, send the campaign, and check inbox, tab, spam, content, and sending-domain results in MailSlurp. Open the Braze inbox placement guide.
No. Device previews show how the delivered email looks. Inbox placement shows which folder receives it. Run both before an important send.
Run the checks again after changing copy, images, personalization, layout, links, tracking, sender details, footer content, audience, or campaign settings.
Check the delivered design and inbox placement while there is still time to fix the campaign.
Free to start. No credit card required.