A professional email signature, Outlook-safe.
Create a professional email signature in under a minute. Hand-coded HTML that pastes cleanly and renders pixel-perfect in Outlook. No sign-up, no watermark, no credit card.
Build your signature.
Pick a layout, fill in your details. The preview updates as you type. Copy the HTML when you're done.
01Layout
02Your details
03Company logo
PNG, JPG, or WebP, max 2 MB.
04Social links
times your signature is seen per day at work
of email signatures break in Outlook desktop
to build a fully branded one with SmartMailing
Everything you need in a free signature builder.
Built for people who want a real, professional signature, not a watermarked ad for the tool that made it.
AI-generated signatures
Coming soon for logged-in users, once you save a brand, signatures are generated automatically using your colors, logo, and socials. No manual setup, no copy-pasting hex codes.
Outlook-safe by default
Hand-coded, table-based HTML that survives Outlook 2016/2019/365, the email client that breaks 80% of signatures from other generators.
Company logo upload
Upload your company logo and we host it on a fast CDN, the URL stays live for 6 months.
One-click copy & install
Copy the signature and paste it straight into a new Outlook email, step-by-step install guide included.
No watermark, no sign-up
100% free with no 'Powered by' line in the output, no email gate, no credit card. Just a clean signature you actually want to send.
26 social platform icons
LinkedIn, X, Instagram, YouTube, TikTok, GitHub, Threads, Bluesky and 18 more, pick your platforms and the builder drops in the real branded icons in black, color, or white at 16, 22, or 28 px.
From blank to installed in under a minute.
Three steps. No sign-up at any stage.
Fill in your details
Name, title, company, phone, email, social links. The live preview updates as you type, no surprises after install.
Pick a layout
Choose from 5 professional templates, Minimal, Classic, Executive, Sales Rep, Real Estate. Customize colors, fonts, and photo.
Copy & paste
One click copies the signature to your clipboard, paste it straight into a new Outlook email and follow our short install guide.
Tested in every email client that matters.
Including Outlook desktop, the one that breaks signatures from other generators.
Email signature templates for every role.
Pre-built layouts tuned for the specific information each role needs.
Frequently asked questions.
Is this email signature builder really free?
Yes, completely free, no sign-up required. You don't need an account or a credit card to build, copy, and install your signature. There's no watermark or 'Powered by SmartMailing' line in the output. If you create a SmartMailing account (also free to start), you get extras like saved signatures and brand auto-fill, but the builder itself works fully without one.
How do I add my signature to Outlook?
We have a full step-by-step install guide that covers New Outlook (Windows & Mac), Classic Outlook desktop, Outlook on the Web, and Outlook mobile, see https://smartmailing.io/email-signature/install-outlook. The short version: copy the HTML from the builder, then in Outlook open Settings → Account → Signatures (New Outlook / Web) or Message → Signature → Signatures… (Classic desktop), paste the HTML, set it as the default, and save. Our table-based output is hand-coded to render correctly in every Outlook version, including the trickiest Classic desktop renderer.
Will my signature look the same in every email client?
Yes, the HTML uses a hand-coded, table-based foundation tested specifically against Outlook 2016/2019 desktop (the trickiest client because it uses Microsoft Word as the rendering engine). Gmail, Apple Mail, Outlook 365, and Yahoo render it consistently. We also include alt text on every image so the signature still reads correctly when images are blocked.
Where is my uploaded logo stored?
Your company logo is stored on Supabase storage and served through a fast CDN. The URL in your signature is permanent for the retention window, once installed, the logo will keep loading in every email you send, with no broken images down the line. Anonymous uploads are kept for 6 months.
Can I add my company logo?
Yes, PNG or JPG up to 2 MB. The builder has a size slider so you can dial in the exact pixel width, and the image is hosted on our CDN so it stays sharp and load-fast in every email you send.
How do I update my signature later?
If you used the builder anonymously, your draft is saved in your browser (localStorage) so you can come back and edit. If you sign in, signatures save to your account and you can manage multiple signatures (e.g., one per role or one per team member) from your dashboard. Updates regenerate the HTML, paste the new version into Outlook to update.
Build your free email signature.
No sign-up. No credit card. No watermark. A clean, professional signature in under a minute.
Start building