IT Admin & Compliance
For the admin who's just been asked to standardise signatures across the org — deployment architecture, Microsoft 365 setup, and what to evaluate first.
- How to Stop Employees Changing Their Signature in Outlook You sent everyone a signature template and people still edit it. Here's what Microsoft 365 offers to lock it down — and why neither option is a clean answer.
- Email Domain Health: MX, SPF, DKIM, DMARC, Sender Reputation Your sending domain is infrastructure you own, not a one-time setup. What MX, SPF, DKIM, DMARC check, why all four can pass and still fail, and what to monitor.
- There's an Open-Source Outlook Signature Add-in on GitHub A small open-source Office.js add-in injects a signature into Outlook automatically, with zero email routed through a third party. Who it genuinely suits.
- Why Your Email Signature Doesn't Show Up on Mobile Your centrally managed signature works perfectly on desktop and vanishes on mobile. Why mobile is architecturally different, and which methods reach it.
- Why Adding an Email Signature Can Break DKIM and S/MIME Adding a signature after a message is cryptographically signed can invalidate it. Why DKIM and S/MIME break, and a test that proves whether your tool does it.
- Consistent Email Signatures as a Phishing and BEC Defence A centrally managed, consistent signature gives staff an implicit baseline to check inbound email against. What that protects against, and what it doesn't.
- Email Signature Software Buying Checklist The questions to ask before buying any email signature tool - architecture, GDPR, directory sync, mobile coverage, legal compliance, pricing, and offboarding.
- Email Signature Software: The Three Types Email signature tools aren't one category. This guide maps the three types — generators, SMB platforms, enterprise platforms — pricing and who each suits.
- How to Set Up a Company-Wide Email Signature in Microsoft 365 A step-by-step guide to applying one email signature to every employee in Microsoft 365 — mail flow rules, personalisation tokens, limitations, alternatives.
- New Outlook for Windows and Email Signatures Classic Outlook and new Outlook use incompatible add-in models. If your signature tool relies on a COM add-in, it will not work after migration.
- Signature Management for Microsoft 365: Server-Side vs Add-In Server-side and add-in email signature tools differ significantly on GDPR, mobile support, and the compose experience. What IT admins need to know.
- Centralised Email Signatures in Microsoft 365: Complete Guide Everything IT admins need to know about centralised email signatures in Microsoft 365 — native options, their limits, and how third-party tools compare.
- How to Manage Email Signatures Across a Company Standardising company email signatures? This guide maps deployment options, technical tradeoffs, and questions to ask before choosing a tool.
- Why Designing HTML Emails for Outlook Is Still a Nightmare Outlook HTML email rendering was broken by design — here's why the Word engine ruined everything in 2007, what still breaks in 2026, and how to code around it.