Email client support report: CSS, images and dark mode (November 2026)
Which CSS, image formats and dark-mode rules work in Outlook, Gmail, Apple Mail and Yahoo? Results from test emails rendered on 12 real email apps.
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Email client support
Which CSS, image formats and dark-mode rules work in Outlook, Gmail, Apple Mail and Yahoo? Answers from test emails on 12 real email apps, with screenshots.
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How to Preview Shopify Emails on Different Devices
Check your Shopify email layout in Gmail, Outlook, iPhone and Android before sending a campaign to subscribers.
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How to Test Shopify Email Inbox Placement
Send a Shopify campaign to controlled test inboxes and check provider results when investigating email deliverability and messages going to spam.
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How to Preview and Test WooCommerce Order Emails
Preview WooCommerce email templates, then send a real order notification to MailSlurp and compare its images, prices and layout in desktop and phone email apps.
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How to Preview Resend Emails on Phones and Desktop Clients
Preview your delivered Resend email in Gmail, iPhone Mail and Outlook. Follow the API walkthrough with a downloadable example or your own populated template.
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How to Test Resend Emails for Inbox Placement
Test Resend inbox placement with an API send and a downloadable email example. Read Inbox and Spam results, then choose what to investigate next.
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How to Test SendGrid Emails for Inbox Placement
Test SendGrid inbox placement through the Mail Send API using a downloadable example or your own email. Read provider results and investigate spam findings.
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How to Test WooCommerce Order Emails for Inbox Placement
Send a WooCommerce order email through your store's mail connection to MailSlurp's test inboxes. Check Inbox and Spam results and investigate missing notifications.
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How to Preview SendGrid Emails in Gmail and iPhone Mail
Preview a SendGrid email after delivery. Send your HTML or template output to MailSlurp and compare the message in Gmail and Apple Mail on iPhone.
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Debug Email and SMS Tests Without Logging OTPs
Keep useful MailSlurp test diagnostics with message IDs, failure stages and timing while excluding OTPs, reset links and message bodies from the report.
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How to Preview an Email Campaign in Apple Mail on iPhone
Make sure your email reads well on iPhone. Use MailSlurp to check Apple Mail layouts, images and buttons, then compare other apps and devices.
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