Tables, not divs
Classic Outlook renders email with Word, which ignores flexbox, grid and most CSS. A table with inline styles is the only layout every client agrees on.
Free tool · No sign-up
Free email signature generator for Gmail and Outlook.
Add your details and logo, pick a template, copy. A clean HTML signature that survives Outlook, Gmail and Apple Mail, built in your browser in about two minutes.
- No account, no watermark
- Nothing uploaded to our servers
- Five templates, live preview
- Works in Outlook, Gmail, Apple Mail
Signature generator
2. Your details
3. Logo
Upload a PNG with a transparent background, or link to a logo already on your website.
Or drag and drop, or paste an image. Resized in your browser; nothing is uploaded.
Recommended for Gmail, which only keeps hosted images.
Heads up for Gmail: an uploaded file is embedded in the signature, which Outlook and Apple Mail keep but Gmail drops. For Gmail, link to a logo on your website instead.
4. Style
From your logo
Only fonts every computer has, so it renders the same everywhere.
5. Extras (optional)
Preview
Hi Marcus,
Confirming the new starters are set up for Monday. Speak soon.
6. Add it to your email
Then follow the steps for your email client below.
Set-up
How to add the signature to your email client
Copy from the preview above, then paste it into the signature editor. Pick your client.
Add an HTML signature to Gmail
- Click Copy signature above.
- In Gmail, click the gear icon, then See all settings.
- On the General tab, scroll to Signature and click Create new. Give it a name.
- Click into the editor and paste (Ctrl+V or ⌘+V).
- Under Signature defaults, pick it for new emails and for replies.
- Scroll to the bottom and click Save changes.
Gmail only keeps images that are hosted at a web address. If you uploaded a logo file, switch to the link to a logo option before copying, or your logo will not appear.
Add an HTML signature to New Outlook & Outlook on the web
- Click Copy signature above.
- Open Settings (the gear icon), then Accounts → Signatures. On older builds it is under Mail → Compose and reply.
- Click New signature, name it, click into the editor and paste.
- Choose it for New messages and for Replies/forwards.
- Click Save.
New Outlook syncs signatures to your account, so the same signature appears on every device signed in to that mailbox.
Add an HTML signature to Classic Outlook (Windows)
- Click Copy signature above.
- In Outlook, open File → Options → Mail → Signatures…
- Click New, name it, click into the edit box and paste.
- Set it as the default for New messages and Replies/forwards, then click OK.
Prefer a file? Click Download .htm, then drop the file into %APPDATA%\Microsoft\Signatures. Outlook lists it next time you open the Signatures dialog.
Add an HTML signature to Outlook for Mac
- Click Copy signature above.
- In Outlook, open Outlook → Settings (⌘+,) → Signatures.
- Click +, name the signature, click into the box and paste. Close the window to save.
- Under Choose default signature, select it for your account.
Add an HTML signature to Apple Mail
- Click Copy signature above.
- In Mail, open Mail → Settings → Signatures.
- Select your account on the left and click +. Name the signature.
- Untick Always match my default message font, click into the box on the right and paste.
- When composing, choose it from the Signature menu, or set it as the default for the account.
Mail on iPhone and iPad only keeps plain text. Server-side tools like UnifySig add the signature after you press send, so phones get the same one as desktops.
Under the hood
Why these signatures render the same everywhere
Most broken signatures share the same four mistakes. The templates avoid all of them, the same rules the UnifySig product enforces.
Hosted images, fixed sizes
Every image carries an explicit width and height and, for Gmail, lives at a real web address. No background images, nothing that depends on a download.
System fonts only
Web fonts never load in email. Arial, Helvetica, Verdana, Tahoma, Trebuchet and Georgia look right on every operating system without a fallback surprise.
Under 600px, over 12px
Narrow enough for a phone, large enough to read. Empty fields collapse so nobody gets a stray “Mobile:” with nothing after it.
For IT teams
One signature is easy. Four hundred is a ticket queue.
Copying a signature onto every laptop works until the first title change, the first new starter, the first phone. UnifySig connects to Microsoft 365 and Google Workspace, fills each signature from your directory and applies it to every mailbox server-side. Design it once, assign by group, done.
- Names, titles and phones pulled from Entra ID or Google Directory
- Applied on the server, so phones, shared mailboxes and OWA all match
- Marketing banners scheduled by date, without a ticket
- Disclaimers by region, an audit log for every change
FAQ
Questions people ask about email signatures
Is the generator really free? Do I need an account?
Yes and no. It is free with no sign-up, no watermark and no time limit. It is our way of introducing UnifySig to people who look after email for a team. If you only need one signature, that is the whole story.
Where does my information go?
Nowhere. The signature is built in your browser and remembered on this device so you can come back to it. Nothing is sent to us unless you use Email me this signature, in which case we send it to the address you enter and keep that address so we can follow up about UnifySig for your team. See the privacy policy.
Why does my logo not show in Gmail?
Gmail drops images that are embedded in the signature itself and only keeps images hosted at a web address. Use the link to a logo option and point it at a PNG on your website. Outlook and Apple Mail are happy with an uploaded file.
Why does it look slightly different in Outlook?
Classic Outlook on Windows renders email with Word, which ignores rounded corners and some spacing. The templates are built with tables and inline styles so the layout stays the same; only small details like corner radius fall back. That is normal for every email signature.
Can I use a custom or web font?
Email clients do not load web fonts, so a signature should stick to fonts every computer has. The generator offers Arial, Helvetica, Verdana, Tahoma, Trebuchet and Georgia for that reason. If your brand font is not on the list, pick the closest and use your logo for the brand feel.
What about social media icons?
Icons are images, and images in signatures must be hosted somewhere that will still exist next year. Rather than serve them from our site, the templates use text links, which always render and never break. UnifySig customers get hosted icon sets and banners as part of the product.
Can I edit the signature later?
Come back to this page on the same browser and it is still here. Or use Email me this signature: the email includes a link that reopens your details in the generator.
How do I set up signatures for everyone in my company?
Copying a signature onto every laptop, phone and shared mailbox does not scale, and it drifts the moment someone changes their title. UnifySig connects to Microsoft 365 or Google Workspace, fills each signature from your directory and applies it to every mailbox server-side. One template, done once. Get notified when it launches.
Be first to know when UnifySig launches.
Leave your work email and we will send one message when the service is fully live, with early-access pricing for the first cohort.