View your Omnisend automations on real email clients
Compare Gmail, Outlook, Yahoo, Apple Mail, iPhone, Android, and dark mode at a glance.
Catch broken Omnisend emails before they cost a sale
MailSlurp previews the delivered promotion on shopper devices and checks inbox or spam before the sale starts.
Omnisend email previewDevice renderingInbox placement test
Trusted by top companies worldwide
Keep product emails clear and clickable on every screen
MailSlurp shows the delivered Omnisend campaign across email clients, including the mobile and dark-mode views where ecommerce layouts often change most.
Create a free accountFree to start. No credit card required.
Find broken links and images across providers
Spot dead buttons, missing assets, clipped layouts, and awkward mobile stacking before launch.
Create better campaigns that convert
Fix the friction before it costs a click—or a sale.
Every device your customers use
See your delivered Omnisend campaign across iPhone, Android, Windows, Mac, Gmail, Outlook, Yahoo Mail, and Apple Mail—including light and dark mode.
Client and device previews
Preview the delivered Omnisend 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 Omnisend send reaches customers.
How it works
Choose the clients, send one Omnisend test, and fix anything that looks wrong.
01
Choose the clients
Pick the email apps, devices, and dark-mode views your customers use.
02
Send one Omnisend test
Send the finished campaign to your MailSlurp render address.
03
Fix what breaks
Compare every preview, make the fix, and send with confidence.
Campaign approval
Share Omnisend 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 notificationsSlackMicrosoft Teams
# campaign-qa
Email launch reviews · 12 members
Maya
What do you think about these mobile previews?
app.mailslurp.com/device-previews/8edc1b89...
Omnisend mobile render
iOS Mail · delivered email
Message #campaign-qa
See where your Omnisend campaign lands
A separate seed test reveals inbox, tab, spam, and missing placement across Gmail, Outlook, and Yahoo before the promotion reaches your customer list.
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.
02
Send the marked Omnisend campaign
Import the current recipients into a dedicated Omnisend test audience, add the exact marker, and send only to those contacts.
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 Omnisend's delivered status
Combine observed mailbox placement with the delivered Omnisend email, client rendering, sender authentication, and content checks so the next fix is based on evidence.
Check Omnisend inbox placement
Confirm whether the campaign reaches inbox, promotions, spam, junk, or goes missing across personal and business mailboxes.
Render on real devices
Preview the same delivered email across Gmail, Outlook, Yahoo, Apple Mail, mobile, desktop, light mode, and dark mode.
Verify sender authentication
Track SPF, DKIM, DMARC, MX records, reputation signals, blocklists, and domain changes alongside each send.
Audit links and content
Catch broken links, missing images, unsupported markup, and content warnings in the exact campaign sent for preview.
Omnisend email QA questions
Practical answers for checking a Omnisend email before the full send.
How do I preview a Omnisend 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 Omnisend test email to the render address. MailSlurp then shows the delivered message in every selected client. Follow the Omnisend device preview guide.
Does the Omnisend 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 Omnisend 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 Omnisend 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 Omnisend checks?
Run the checks again after changing copy, images, personalization, layout, links, tracking, sender details, footer content, audience, or campaign settings.
Omnisend
Protect the clicks in your next Omnisend campaign
Find broken layouts and inbox placement problems before the promotion goes live.
Free to start. No credit card required.