Email Design guides and tutorials
14 practical MailSlurp resources
Articles and guides
Email Preheader Text: Make the Inbox Preview Worth Reading
Write useful email preheader text, check what Gmail and Outlook display, and prevent your inbox preview from filling with footer or browser-link text.
Read moretechnicalEmail Accessibility Checklist for Marketing Teams
Check email contrast, reading order, alt text, links and mobile layouts. Use a practical accessibility review alongside real email-client previews.
Read moretechnicalBulletproof Email Buttons: Outlook and Mobile Checks
Keep email buttons readable with images off and usable on phones. Review Outlook fallbacks, dark mode, tracked links and tap areas before sending.
Read moretechnicalYour Email Font Changed: How to Fix Wrapping and Fallbacks
Test what happens when a campaign uses its fallback font. Compare real Gmail, Outlook and Apple Mail results, then repair crowded headings, prices and buttons.
Read moretechnicalYour Email Background Disappeared: Keep the Message Readable
See how one email background changes in Outlook and Gmail, then choose a solid-color fallback or foreground image that preserves the campaign's offer.
Read moretechnicalWhy Your Hidden Email Preheader Appears in the Message
Fix preview text leaking above your campaign. See a real Gmail mobile repair, check your ESP settings, and approve the inbox snippet and opened email separately.
Read moretechnicalSVG or PNG for Email Logos? A Real Gmail and Outlook Comparison
Compare linked SVG, inline SVG and PNG in five real email clients. Choose a reliable campaign logo and test its size, visibility and dark-mode treatment.
Read moretechnicalHow to Preview Email in Apple Mail on Mac, iPhone and iPad
Catch layout and image problems across Apple devices before you send. Use MailSlurp to compare the same email on Mac, iPhone and iPad.
Read moretechnicalHow to Preview and Test HTML Email in Outlook
Preview HTML email in Outlook desktop, web and mobile apps. Compare layouts, images and dark-mode colors with MailSlurp before sending.
Read moretechnicalHow to Preview and Test Email Campaigns in Yahoo Mail
See how your HTML email renders in Yahoo Mail before sending. Use MailSlurp to check campaign layouts and images, then compare other email clients.
Read moretechnicalHow to Preview and Test Email Across Gmail Apps
Catch broken layouts, missing styling and dark-mode problems in Gmail. Compare your email on the web, Android and iPhone with MailSlurp.
Read moretechnicalEmail Images Not Showing? Keep Your Offer and CTA Readable
Tell blocked pictures from broken image links, see a real missing-image test, and make your campaign understandable before customers download the artwork.
Read moretechnicalHow to Embed Images in HTML Email
Learn how to embed images in HTML email with CID attachments, hosted URLs, or Base64, then test rendering across Gmail, Outlook, and mobile clients.
Read moretechnicalGIFs in Email: Test the Frame Your Customers May See
Make animated email GIFs useful when motion stops. Review the first frame, a real-text CTA, loading and client playback before approving a campaign.
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