Builds an HTML email signature from your name, role, contact details and logo address, using a table layout with inline styles that mail clients keep. For founders and teams who want one clean signature in Gmail, Outlook or Apple Mail.
How to use it
- Enter your name, then the role and contact details you want to show.
- Add the address of your logo image and any extra links, if you have them.
- Check the preview. The signature updates as you type.
- Copy the formatted signature and paste it into your mail client's signature box, or copy the HTML.
How Reavlo tests this
The signature is built in your browser from the fields you fill in. Fields left empty are left out.
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Addresses must start with https:// or http://, so a signature can't carry a link that runs code. The email address is checked for a plain name@domain form.
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Every value is escaped before it goes into the HTML, so a name with markup characters shows as text.
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The layout uses tables and inline styles only, with web-safe fonts. Mail clients, Outlook especially, drop classes, web fonts and much of modern CSS.
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The logo is an image address you give. Reavlo doesn't load it or store it; the reader's mail client loads it from your address, so it must be public and use https.
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Mail-client support is a desk check, not a test in a live inbox. Every element, attribute and CSS property in the output is listed in the engine against the Can I email support data for Gmail (web and apps) and Outlook (Windows, Mac, web and apps), read on 13 October 2026 from data last updated on 16 September 2026. A test fails if the signature starts using something that is not listed or is unsupported in Gmail or Outlook. Results: Gmail supports everything used; Outlook for Windows (Word engine) supports it only in part for
width,height,padding,line-height,borderand a few more, which the layout works around by using tables, pixel sizes and cell padding. A few basics (the font and color properties,tbody,tr,td, link and image attributes) have no page in that data, so they are marked as not listed rather than assumed.
Limits. We did not open the signature in a real Gmail or Outlook account, so rendering is not confirmed there. How a signature looks depends on the mail client and on the reader's settings, some of which block remote images until the reader allows them. A client update can change the result. UTM tags on links are not added yet.
Questions
How do I add the signature to Gmail or Outlook?
Use Copy formatted signature, open the signature settings of your mail client and paste into the signature box. The Gmail and Outlook help pages describe where the box is.
Why isn't my logo in the preview?
The page can only load files from its own address, for security. In the email, the reader's mail client loads the logo from the address you entered.
Where should I host the logo?
On any public https address you control. The image should be small, around 160 pixels wide for a sharp 80 pixel logo.
Is my information uploaded?
No. The signature is built in your browser tab and nothing is sent to a server or stored.