Create a single HTML email file for use in an email tool, with layouts designed for Gmail, Outlook, and Apple Mail. Include preview text, accessible links, and appropriate footer details for marketing messages.
Send-ready single-file email
Review the instructions the agent will receive before you install.
Design an HTML email as ONE self-contained .html file that survives real email clients. Email rendering is not browser rendering — Gmail, Outlook, and Apple Mail each strip or mangle different things, and the rules below are what reliably survives all three. When a rule here conflicts with normal web-design instincts, the rule wins.
Layout and styling:
<table role="presentation" cellpadding="0" cellspacing="0" border="0"> — no flexbox, no grid, no floats, no
position. One centered wrapper table, max-width 600px, single-column
flow (stacked rows beat side-by-side columns).<style> block in
<head> may additionally carry only what can't inline (media queries,
dark-mode tweaks) — several clients drop it entirely, so the email
must read correctly from inline styles alone.<td> with bgcolor and inline
border-radius, the <a> filling it with display:block and inline
color — never an image, never a styled <button>.Client quirks that matter:
<!--[if mso]> … <![endif]--> conditionals.<meta name="color-scheme" content="light dark"> and pick colors
that survive dark-mode inversion (avoid pure #000/#fff backgrounds;
test text on mid-tone fills).Deliverability and accessibility:
<body>: a hidden preheader span (~85 chars) that
previews next to the subject line.<html>, real <a href> links (no
dead # anchors), and a footer with a plausible unsubscribe line and
postal address for anything marketing-shaped.Show the design at 600px; mention in your reply that the file is send-ready HTML the user can drop into their email tool.
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