Best Email Signature Generators in 2026

Let's be honest: most email signature generators are basically the same tool with different logos. Fill in your name, pick a template, click a button. The real differences are in the details — how clean is the HTML output? Does it actually render in Outlook? Will they charge you for something that should be free?

We tested 7 generators by creating the same signature in each one, then sending test emails through Gmail, Outlook (desktop and web), and Apple Mail. Here's what we found — with honest assessments including where each tool falls short.

Updated: March 2026·~9 min read

Pro Tip

The most important factor in choosing a signature generator isn't features — it's HTML output quality. A beautiful editor that produces broken Outlook HTML is worse than a simple tool that generates clean code. Always test the output before committing.

Quick Comparison

Tool	Free Tier	Outlook OK?	Best For
SignForge	Yes (full, no signup)	Yes	Individuals, freelancers
WiseStamp	Yes (with branding)	Mostly	Gmail browser extension users
HubSpot	Yes (needs account)	Yes	HubSpot CRM users
MySignature	Limited	Variable	Marketing teams
Exclaimer	No	Yes	Large enterprises (50+ users)
Newoldstamp	Limited	Mostly	Mid-size teams (5-50)
Mail Signatures	Basic	Yes	Outlook-focused users

1. SignForge

Free (no account required)

Pros

Genuinely free with no signup wall
6 professional templates with instant preview
Generates clean table-based HTML with inline CSS
Works perfectly in Outlook, Gmail, and Apple Mail
Custom brand colours and social icons
Copy-to-clipboard with one click

Cons

No team management features (it's a personal tool)
No image hosting — you need to host logos elsewhere
No analytics or tracking

Verdict

Best for individuals and small teams who want a clean, professional signature without creating an account or paying anything. The HTML output is genuinely well-structured.

2. WiseStamp

Free tier + Pro from $5.80/mo

Pros

Browser extension auto-inserts signature
Supports dynamic content (RSS, Instagram feed)
Good template variety

Cons

Free tier adds WiseStamp branding
Pro pricing adds up for teams
Some templates produce bloated HTML
Dynamic content features can break in Outlook

Verdict

Good for personal Gmail users who want automatic insertion. The browser extension is convenient but the HTML quality varies by template.

3. HubSpot Email Signature Generator

Free (requires HubSpot account)

Pros

Clean, professional templates
CTA banner option for marketing
Integrates with HubSpot CRM

Cons

Requires creating a HubSpot account (even for free use)
Limited template customisation on free tier
Signature HTML can be overly complex
No custom colour picker on free plan

Verdict

Best if you already use HubSpot for CRM. Otherwise, the account requirement for a 'free' tool feels unnecessary.

4. MySignature

Free tier + Pro from $4/mo

Pros

Large template library (40+)
Built-in banner and CTA features
Analytics on signature link clicks

Cons

Free tier is heavily limited
Some templates don't render well in Outlook
Interface can feel cluttered

Verdict

Good for marketing teams who want banner campaigns and analytics. The template quality is inconsistent — test in Outlook before deploying.

5. Exclaimer

From $2/user/mo (business plans only)

Pros

Enterprise-grade team management
Centralised signature deployment via Microsoft 365 / Google Workspace
Dynamic fields (pull data from Active Directory)
Banner campaigns with analytics

Cons

No free tier — minimum commitment
Overkill for individuals or small teams
Setup requires IT involvement
Pricing scales with team size

Verdict

The industry standard for large organisations. If you need to manage signatures for 50+ people centrally, Exclaimer is hard to beat. Overkill for anything smaller.

6. Newoldstamp

Free limited + from $6/mo

Pros

Modern template designs
CTA banners and promotional campaigns
Team management dashboard

Cons

Free tier has branding and limited exports
Higher pricing than competitors
HTML output can be heavy for complex templates

Verdict

Solid mid-market option for teams of 5-50. The banner campaign feature is well-implemented if you want to use signatures for marketing.

7. Mail Signatures (mailsignatures.com)

Free basic + Pro from $2.50/mo

Pros

Simple, no-nonsense interface
Good Outlook compatibility
Affordable Pro tier

Cons

Limited design customisation
Fewer templates than competitors
No team management on basic plan

Verdict

A straightforward option for Outlook users. Not the most feature-rich, but the HTML output is clean and the pricing is fair.

How to Choose the Right Generator

You're an individual or freelancer

Use SignForge. It's free, no signup required, and the HTML output is clean. You'll have a signature in 60 seconds.

You're a team of 5-50

Try Newoldstamp or MySignature. Their team management features are worth the monthly cost for consistency across your company.

You're a large organisation (50+)

Exclaimer is the industry standard. Centralised deployment via Active Directory or Google Workspace saves IT hours.

You use HubSpot for CRM

Use HubSpot's free generator. The integration with your CRM makes signature campaigns easy to manage.

You mainly use Gmail

WiseStamp's browser extension is genuinely convenient for auto-inserting signatures. Or use SignForge for a simpler, free alternative.

Related Guides

Try SignForge — Free, No Signup Required

6 templates, custom colours, social icons, one-click copy. See why it's the top free option.

Create My Signature →

Works with Gmail, Outlook, Apple Mail & more