Catch broken Braze campaigns fast

Broken on iPhone? Buried in spam? Catch it before your customers do with MailSlurp inbox placement testing and device previews.

A marketer reviewing a Braze campaign on phone and tablet email previews
Braze email preview
Preview a delivered Braze marketing email on mobile and tablet before sending it to customers.
Device renderingInbox placement test

Trusted by top companies worldwide

  • Broadcom
  • Scraper
  • Trivago
  • Avast
  • Wolt
  • Panasonic
  • Broadcom
  • Scraper
  • Trivago
  • Avast
  • Wolt
  • Panasonic
Delivered Braze marketing email previewed across Gmail, Outlook, and Yahoo devices

Test Braze emails on every device

One delivered campaign reveals what an editor preview can miss.

Create a free accountFree to start. No credit card required.
Braze logo displayed on an iPhone

View your Braze campaigns on real email clients

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

Broken links and missing images detected in a delivered Braze email

Find broken links and images across providers

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

Tested Braze email beside a rising conversion chart

Create better campaigns that convert

Fix the friction before it costs a click—or a sale.

Every device your customers use

See your delivered Braze campaign across iPhone, Android, Windows, Mac, Gmail, Outlook, Yahoo Mail, and Apple Mail—including light and dark mode.

Gmail, Outlook, Yahoo Mail, Apple, Android, and Windows arranged around phone, tablet, laptop, and desktop devices

Client and device previews

Preview the delivered Braze email before customers see it

Review the campaign across supported email clients and configured render targets, compare results, and inspect the source HTML before the Braze send reaches customers.

How it works

Choose the clients, send one Braze test, and fix anything that looks wrong.

Gmail, Outlook, and Yahoo selected with phone, tablet, and desktop previews
01

Choose the clients

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

Braze test email sent to MailSlurp for phone, tablet, and desktop previews
02

Send one Braze test

Send the finished campaign to your MailSlurp render address.

Delivered Braze marketing email previewed across Gmail, Outlook, and Yahoo devices
03

Fix what breaks

Compare every preview, make the fix, and send with confidence.

Campaign approval

Share Braze renders with your team for 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.

Create a free accountFree to start. No credit card required.
Set up team notifications
SlackMicrosoft Teams

# campaign-qa

Maya, the marketer sharing an email preview

Maya

What do you think about these mobile previews?

app.mailslurp.com/device-previews/8edc1b89...

Real iOS Mail screenshot of the delivered Braze campaign

Braze mobile render

iOS Mail · delivered email

Message #campaign-qa

How Braze spam testing works

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.

New MailSlurp inbox placement seed test for Gmail, Outlook, and Yahoo
01

Create a fresh seed run

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

Marked Braze campaign sent to controlled Gmail, Outlook, and Yahoo seed inboxes
02

Send the marked Braze campaign

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

Braze inbox placement score with Gmail, Outlook, and Yahoo results
03

See where the campaign landed

Check inbox, tab, spam, and missing results, then review content and sending-domain findings before the full send.

See more than Braze's delivered status

Combine observed mailbox placement with the delivered Braze email, client rendering, sender authentication, and content checks so the next fix is based on evidence.

Check Braze inbox placement

Outlook inbox placement result showing an email delivered to spam

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

Render on real devices

Gmail, Outlook, and Yahoo across phone, tablet, and desktop

Preview the same delivered email across Gmail, Outlook, Yahoo, Apple Mail, mobile, desktop, light mode, and dark mode.

Verify sender authentication

Sender health score with SPF, DKIM, and DMARC status checks

Track SPF, DKIM, DMARC, MX records, reputation signals, blocklists, and domain changes alongside each send.

Audit links and content

Email audit score with passed checks, warnings, and errors

Catch broken links, missing images, unsupported markup, and content warnings in the exact campaign sent for preview.

Braze email QA questions

Practical answers for checking a Braze email before the full send.

How do I preview a Braze email on iPhone, Gmail, and Outlook?

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.

Does the Braze test use the email customers would receive?

Yes. The preview starts from the delivered test message, including its HTML, hosted images, links, footer, and campaign content.

Can I test Braze inbox placement as well?

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.

Is inbox placement the same as device rendering?

No. Device previews show how the delivered email looks. Inbox placement shows which folder receives it. Run both before an important send.

When should I rerun these Braze checks?

Run the checks again after changing copy, images, personalization, layout, links, tracking, sender details, footer content, audience, or campaign settings.

Braze
MailSlurp

Catch Braze email problems before launch

Check the delivered design and inbox placement while there is still time to fix the campaign.

Free to start. No credit card required.