Hamilton365

Hamilton365 is a Brisbane-based IT consultancy specialising in Microsoft 365 support, available after hours and on weekends when most providers aren't.

Founded by Jamie Hamilton — an IT professional with 25+ years of experience including enterprise-scale work across Queensland's education and construction sectors — Hamilton365 exists to fill a genuine gap: businesses that need expert M365 help outside of standard business hours without being locked into expensive full-service MSP contracts.

We work with small and growing businesses that rely on Microsoft 365 and need reliable support for Exchange Online, email security, identity and access management (Entra ID), and emergency break-fix situations. Whether it's a mail flow issue at 7pm, an urgent DMARC problem, or a user lockout that can't wait until Monday — we're available when it matters.

What sets us apart:

Dedicated after-hours and weekend availability for on-site Brisbane support and remote support anywhere in Australia

Deep Microsoft 365 expertise including Exchange Online migrations, Entra ID configuration, DMARC/SPF/DKIM implementation, and Microsoft Defender for Office 365

Enterprise background — including managing identity and messaging systems for 200,000+ users and achieving 99.9%+ DMARC compliance across 1.5M+ emails per week

Straightforward pricing with no lock-in contracts for break-fix work

If your business depends on Microsoft 365 and you need someone you can actually reach after hours — Hamilton365 is built for exactly that.