CLIENT VISUAL EMULATION SPACE (EDITABLE)
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Outlook Reply Stress-Test. Some email clients' reply/quote re-parsers (Outlook's Word engine, Apple Mail, Gmail) can discard styling from a pasted signature and fall back to default rendering. The three panes below render the exact copied HTML under a deliberately hostile stylesheet: Protected is the real export as-is; Borders Stripped removes only border CSS; Total Style Loss removes every inline style entirely — the true worst case, survived only by the legacy HTML attributes (border="0", cellpadding, etc.) still present in the markup. We can't guarantee no client will ever do this — only reduce and reveal the risk. This isn't a pixel-perfect Outlook emulator — treat it as a fast regression check, not a replacement for a real Outlook desktop test.
Protected — Actual Export
Should render completely clean — no gridlines or boxes.
Worst Case — Borders Stripped
Control case — should visibly show boxed cells, proving the hostile stylesheet is actually applied.
Total Style Loss — True Worst Case
The absolute ceiling — every inline style gone, not just borders. Only legacy HTML attributes remain; no CSS technique can prevent this scenario.