Both options can provide a professional address on your domain. The decision is really about the surrounding work: mailbox capacity, desktop apps, shared calendars, security controls, administration and how the team collaborates.
The short version
- A solo operator may need only a reliable branded mailbox.
- Microsoft 365 becomes stronger when the team needs Office apps and central identity management.
- Compare migration and administration, not the licence price alone.
- SPF, DKIM, DMARC and account security matter on either platform.
What basic business email does well
A dedicated hosted mailbox can be a simple and economical fit for a small team that mainly needs sending, receiving, webmail and device access. It keeps the address professional without paying for a wider productivity suite.
Check storage, attachment limits, spam filtering, supported sync methods and administrator access. Some low-cost mailboxes rely on older protocols or provide limited shared-calendar features.
- Branded address
- Mailbox and webmail
- Spam filtering
- Aliases and forwarding
- Lower entry price
What Microsoft 365 adds
Microsoft 365 Business plans can add Exchange Online email, OneDrive, SharePoint, Teams options, desktop Office applications and progressively stronger security or device controls. Features differ by plan and Microsoft changes packaging over time, so compare the current Australian plan table before ordering.
A central tenant also gives the business a structured way to add, remove and secure users as the team grows.
- Larger Exchange mailboxes on relevant plans
- Shared calendars and mailboxes
- Web or desktop Office apps by plan
- Central user administration
- Additional security options on higher plans
A role-by-role comparison
Do not assume every person needs the same licence. An owner may need desktop Office and advanced controls, while a casual field worker may need only an appropriate email or web-access option. Mixed licensing can be sensible within Microsoft rules.
- Does the role need desktop Word, Excel or Outlook?
- Will files be shared through OneDrive or SharePoint?
- Are shared mailboxes or calendars important?
- Is company-device management required?
- What happens when a person leaves?
Migration is where the risk sits
Keeping the same address does not make a mailbox move automatic. Inventory mail, folders, contacts, calendars, aliases, forwarding rules, devices and line-of-business applications that send email. Preserve old access until incoming and outgoing messages are confirmed on the new platform.
The practical recommendation
Choose hosted email when the need is genuinely simple and the provider offers sound security and support. Choose Microsoft 365 when collaboration, Office applications, identity administration or security justify the added licence and setup. In both cases, register the domain correctly and document who holds administrator and recovery access.
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