The Sigmint blog
Everything about email signatures that actually work — no fluff.
· 5 min read
Why Your Email Signature Breaks in Outlook (and How to Fix It)
Your signature looks perfect until it hits Outlook. Here's why desktop Outlook mangles signatures — and the concrete fixes that make yours render everywhere.
Read →· 6 min read
Email Signature Best Practices: What to Include (and What to Leave Out)
A great email signature is a business card, not a billboard. Here's exactly what to include, what to cut, and the design rules that hold up in every inbox.
Read →· 5 min read
How to Test Your Email Signature Across Every Email Client
Your signature is only as good as the worst inbox it lands in. A practical, repeatable method for testing across Outlook, Gmail, Apple Mail, mobile, and dark mode.
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Email Signature Size Guide: Dimensions, Image Sizes, and File Weight
How big should an email signature be? A practical guide to width, logo dimensions, retina images, and the file-weight limits that quietly break signatures.
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Free vs Paid Email Signature Generators: What You're Actually Paying For
Free signature generators aren't really free. A clear-eyed look at hosted images, tracking, subscriptions, and what separates a good paid tool from a costly one.
Read →· 7 min read
How to Make an HTML Email Signature That Renders Everywhere
A practical guide to building an HTML email signature that survives Outlook, Gmail, and Apple Mail — using tables, inline CSS, and hosted images.
Read →· 6 min read
The Best Fonts for Email Signatures (and Why Web Fonts Fail)
Which fonts actually render in email signatures across Outlook, Gmail, and Apple Mail — plus how to build a font stack that never falls back to Times New Roman.
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9 Email Signature Mistakes That Make You Look Unprofessional
The common email signature mistakes — image-only designs, broken layouts, clutter, and tracking pixels — and simple fixes that keep yours clean and credible.
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Do Email Signatures Affect Deliverability? What Actually Matters
Can your email signature send you to spam? A clear look at how images, tracking pixels, and heavy HTML affect deliverability — and how to keep signatures safe.
Read →· 6 min read
How to Add a Banner to Your Email Signature (Without Breaking It)
Step-by-step guide to adding a promotional banner to your email signature — sizing, hosting, linking, and alt text so it renders in Outlook, Gmail, and Apple Mail.
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Email Signature Dos and Don'ts: 14 Rules Professionals Actually Follow
A practical guide to email signature dos and don'ts, from length and hierarchy to logos, social icons, and the mistakes that quietly break your sign-off.
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How to Add a Logo to Your Email Signature (So It Actually Displays)
How to add a logo to your email signature: the right image size, where to host it, and how to make it display reliably in Outlook, Gmail, and Apple Mail.
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The Professional Email Signature Checklist: Everything to Get Right
A complete professional email signature checklist covering the details, formatting, links, mobile display, and legal lines to verify before you hit send.
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The Email Signature for Job Seekers: Templates, Examples, and Tips
What to put in your email signature as a job seeker and what to leave out, plus formatting tips and examples for applications, networking, and follow-ups.
Read →· 6 min read
Should You Include a Photo in Your Email Signature? A Balanced Guide
The case for and against a headshot in your email signature: when a photo helps, when it hurts, and how to do it right if you decide to include one.
Read →· 6 min read
Email Disclaimer Examples: Confidentiality, Legal, and GDPR Templates
Ready-to-adapt email disclaimer examples for confidentiality, legal, GDPR, and regulated industries, plus advice on whether you actually need one at all.
Read →· 5 min read
Email Signatures for Small Business: A Practical Guide to Looking Professional
How small businesses can build a professional email signature that earns trust, stays on-brand, and renders correctly in every email client.
Read →· 5 min read
How to Add Social Media Icons to Your Email Signature (Without Breaking It)
Add social media icons to your email signature the right way: host the images, link profiles correctly, survive dark mode, and avoid the attachment paperclip.
Read →· 5 min read
Email Signature Colors: A Guide to Shades That Actually Render
A practical guide to email signature colors: brand accents, contrast, surviving dark mode, using hex codes, and shades that render across every email client.
Read →· 6 min read
Why Is My Email Signature Image Showing as an Attachment? How to Fix It
Your email signature logo showing up as an attachment? Learn why Outlook embeds images, and the hosted-image fix that stops the paperclip for good.
Read →· 6 min read
The Ideal Email Signature for Real Estate Agents: What to Include and Why
What the ideal real estate agent email signature includes: headshot, brokerage, license number, contact details, and a call to action that actually converts.
Read →· 5 min read
HTML vs Plain Text Email Signatures: Which Should You Use?
HTML vs plain text email signatures compared: branding, deliverability, rendering, accessibility, and how to choose the right one for the way you work.
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