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Install guides, profession-specific tips, email client compatibility deep-dives, and best practices for HTML email signatures. Written by the team building MailSigCraft.

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July 18, 2026·10 min read·comparison, tools, templates

Best email signature generator: 5 questions beat any top-10 list (2026)

The best email signature generator depends on your setup, not a ranked listicle — compare four real free options, then pick yours with 5 quick questions.

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July 16, 2026·10 min read·gmail, how-to, images

How to add an image to a Gmail signature (and which method survives forwarding)

Gmail gives you three ways to add a signature image — upload, Drive, or a URL. Here's which one actually survives forwarding, replies, and Google's 2024 Drive change.

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July 14, 2026·10 min read·banners, images, compatibility

Email signature banner size: the exact pixel math for every client (2026)

The right email signature banner size for Gmail, Outlook, and Apple Mail — plus why base64-inlined banners trigger Gmail's '[Message clipped]' link.

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July 11, 2026·10 min read·calendly, email-signature, how-to

How to add a Calendly link to your email signature (without losing attribution)

The right way to add a Calendly link to your email signature — persistent link, hyperlinked text, and the UTM parameters that keep booking attribution intact.

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July 9, 2026·12 min read·out-of-office, email-etiquette, templates

Out of office email signature examples (12 patterns that actually work in 2026)

Twelve out of office email signature examples for vacations, sabbaticals, and delegation — plus the four mistakes that make replies wait longer than they should.

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July 1, 2026·11 min read·troubleshooting, outlook, replies

Why your Outlook signature isn't showing up in replies (but works on new emails)

The fix for Outlook signatures that appear on new emails but disappear from replies and forwards — with the five separate causes (New vs Classic Outlook, per-account dropdown, roaming signature overrides, plain-text reply mode, and mobile Outlook stripping).

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June 27, 2026·11 min read·best-practices, accessibility, team-rollout

How to add pronouns to your email signature — and where to put them

The two correct formats for pronouns in an email signature, how to add them in Gmail / Outlook / Apple Mail, and the placement gotchas that break in ATS, recruiting tools, and multi-language teams.

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June 25, 2026·10 min read·install-guides, apple-mail, iphone

How to change the 'Sent from my iPhone' signature — and what to put instead

Step-by-step iOS instructions to remove or change the default 'Sent from my iPhone' email signature, the Per Account trap that catches everyone, and what actually belongs in a mobile signature.

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June 21, 2026·11 min read·design, images, troubleshooting

Email signature logo size: the exact dimensions, file size, and Retina rules

What size should your email signature logo be? The exact pixel dimensions, file weight budgets, format choices, and Retina (2×) rules that keep your logo crisp in Gmail, Outlook desktop, Apple Mail, and on mobile.

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June 19, 2026·10 min read·troubleshooting, outlook, apple-mail, gmail, html-email, attachments

Email signature showing as an attachment (image001.png, ATT00001)? 6 reasons and the fix for each

Your recipient sees image001.png, ATT00001.htm, or your logo arrives as a downloadable file instead of rendering inline. Here's why mail clients attach signatures instead of inlining them and the fix for each cause.

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June 15, 2026·8 min read·dark-mode, troubleshooting, design, gmail, outlook, apple-mail

Email signature broken in dark mode? 6 reasons your logo and text disappear (and the fix for each)

Around 1 in 3 email opens now happens in dark mode, and most signatures weren't designed for it. Here's why dark mode mangles signatures and the design rules that ship one signature that survives both modes.

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June 9, 2026·7 min read·troubleshooting, gmail, outlook, apple-mail, html-email

Email signature image not showing? 7 reasons and the fix for each

Your signature logo or photo shows as a red X, a broken-image placeholder, or shows blurry on Retina. Here's why mail clients drop signature images and how to fix each cause.

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June 7, 2026·6 min read·outlook, troubleshooting, html-email

Outlook 365 vs Outlook desktop signatures: why one works and the other breaks

A signature that looks perfect in Outlook on the web silently mangles in Outlook desktop on Windows. Here's the renderer split that causes it, and how to ship one signature that survives both.

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June 3, 2026·6 min read·troubleshooting, html-email

9 things that break email signatures across Gmail, Outlook, and Apple Mail

Email signatures look pixel-perfect in one client and mangled in another. Here are the nine specific things that cause cross-client rendering failures — and the fix for each.

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June 3, 2026·5 min read·gmail, troubleshooting

Why your Gmail signature is being cut off (the 10,000 character limit explained)

Gmail silently truncates email signatures over 10,000 characters. Here's how the limit really works, why your signature blew past it, and how to slim the HTML down without losing the design.

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May 29, 2026·5 min read·install-guides, apple-mail

How to add an email signature in Apple Mail (Mac, iPhone, and iPad)

Step-by-step instructions for adding an HTML email signature in Apple Mail on macOS and iOS, plus fixes for the formatting and image problems that trip everyone up.

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April 30, 2026·10 min read·outlook, troubleshooting, install-guide

Outlook email signature not showing: 9 fixes that actually work

Outlook stores signatures in five different places depending on the version, and a working signature on one usually means a broken one on the others. Here's what's really happening, and how to fix it.

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April 20, 2026·7 min read·gmail, install-guide, troubleshooting

How to add a signature in Gmail (and the 8 things that go wrong)

The full Gmail signature setup — desktop, mobile, aliases, Google Workspace. Plus the image rendering, font mangling, and reply quirks that break signatures in production.

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April 20, 2026·2 min read·announcements

Welcome to the MailSigCraft blog

Why we're starting a blog, what we'll write about, and what you can expect if you subscribe to the feed.

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