Security Alert · Minimal

It opens: "Northwind New sign-in from a device we don't know Your Northwind account was accessed from a browser that hasn't signed in before. If this was you, no action is needed. When 14 Oct 2025, 09:42 WEST Where Lisbon, Portugal Device...". Preheader: "A new device signed in from Lisbon, Portugal.". Links: "This wasn't me". 0 images, 3 Outlook-only blocks, no dark-mode query, system fonts.

The spread is what matters on this template: 100 in Superhuman against 91 in Outlook Classic, a 9-point gap across the same file. 18 of the 21 clients render it without a single flagged property. Outlook Classic is the one to preview against after any edit, because it is where this template has the least margin, and the 68 warnings behind that score are concentrated there rather than spread evenly.

At 6.3KB compiled it has roughly 96KB of headroom before Gmail clips the message at 102KB and hides the rest behind a "View entire message" link. Inlined CSS and base64 images both count toward that, so watch it as you add sections.

Safe to customise: The reference numbers, amounts and support link. Transactional mail is read for its data, so put the value the reader came for in the first block rather than below a banner.

Leave alone: The table scaffolding around the detail rows. Outlook derives row height from cell padding and ignores margins entirely, so swapping the tables for divs is what turns a tidy receipt into a stack of touching lines.

Modified it? Check your version against the same 21 clients.