Signal, Trial ending

Three days left set on the screen, then a plain table of what stops and what stays. Send it three days before a trial runs out.

680px

About this email

Subject line: Three days left on your Signal trial
Preview text: What stops on Friday, what stays, and what it costs to keep it.
Width: 600px, stacks on phones
Export size: 40,630 bytes (39.7 KB)
Free: Yes, with no account and no export limit.

Table layout with ghost tables for Outlook. Columns are tables inside Outlook-only conditional comments, so Word's engine gets the widths it needs and everyone else gets the responsive version.
VML buttons. Each button is a VML shape for Outlook and a padded link everywhere else, so the whole button is clickable in both.
Background images with VML fill. Background images fall back to a VML rectangle in Outlook instead of disappearing.
Dark-mode meta. color-scheme and supported-color-schemes tell Apple Mail and Outlook how the email expects to be treated in dark mode.
Preheader. The preview text is in the HTML, hidden from the body, so the inbox shows what you wrote instead of the first line of the footer.
Mobile stacking. Columns stack under 600px with a media query, and stay side by side where media queries are ignored.
Inline styles. Every style that matters is on the element, because Gmail strips most of the head and some clients drop it entirely.
Exact line heights in Outlook. mso-line-height-rule: exactly keeps spacers and text from drifting in Outlook for Windows.
Outlook DPI fix. The OfficeDocumentSettings block stops Outlook from scaling images on high-DPI Windows displays.
Presentation tables. Layout tables carry role="presentation" so screen readers read the content, not the grid.