Outlook 365 Email Signature Generator

Outlook 365 doesn't use Chrome, Firefox, or Safari to render email. It uses Microsoft Word's layout engine. Word was built for documents with fixed dimensions and predictable content—not flexible email templates. When you paste HTML into Outlook 365's signature field, Word parses it aggressively. It strips <style> tags completely. It removes any class attribute. It ignores CSS properties it doesn't recognize. Padding, margin, border-radius, and transform all vanish. External image URLs get flagged as potential security risks, so Outlook blocks them or displays broken-link placeholders. Colors you set in hex notation sometimes convert to RGB or invert based on the recipient's dark-mode settings. Font sizes specified in pixels scale unpredictably. Line heights collapse. Nested divs reflow into unexpected widths. Table cells lose alignment. This happens because Outlook 365 applies its own default styles on top of yours—cascading styles you never wrote. The solution isn't to fight Word's rendering engine. It's to code for it. Table-based layouts with inline styles, system fonts, base64 images, and fixed dimensions work every time because you're working within Outlook 365's actual constraints, not against them.

SignatureFox delivers your signature as an HTML file. You don't copy-paste raw code into Outlook's editor. Instead, you import the file directly into Outlook 365's signature settings. This method preserves all inline styles, embedded images, and formatting that would break if you pasted into the text editor manually. Outlook 365 has a built-in HTML import feature designed for this exact workflow. When you use it, every pixel of your signature installs flawlessly. The process takes two minutes. You'll download your HTML file from SignatureFox, open Outlook 365, navigate to File > Options > Mail > Signatures, and use the import function. Outlook reads the HTML, embeds the images, and stores your signature in its database. Your signature then appears in the composition window every time you draft a new email. You can set it as your default signature for all outgoing messages. If you ever need to edit your signature later, SignatureFox offers an edit link for $4.99. That link lets you regenerate your HTML with new contact details, logos, or social icons—no new purchase required. Your signature syncs across all Outlook 365 devices: desktop, web, and mobile.