Email is the system most businesses take for granted until it fails. A full mailbox stops a supplier's order, a phishing attack captures a manager's password, or a migration loses five years of correspondence. Choosing business email hosting is therefore a real infrastructure decision, not a checkbox on a domain purchase. This guide compares the three common routes — a hosted mail server, Google Workspace and Microsoft 365 — and gives you a practical way to decide which fits your organization.
The three main options
A hosted mail server
Your mailboxes live on a mail server managed by a hosting provider or your own IT partner. This might be a control-panel based server (such as cPanel with its built-in mail stack) or a dedicated mail platform. Access is through webmail, IMAP/SMTP in any client, and often ActiveSync or CalDAV for mobile and calendars.
Strengths: lower per-mailbox cost at scale, choice of server location, generous storage, no dependency on a single global vendor, and flexibility for unusual needs such as very large archives or many shared or role mailboxes.
Watch-outs: quality depends heavily on who manages it. Spam filtering, security patching, backups and deliverability need active, competent attention.
Google Workspace
Gmail with your domain, plus Calendar, Drive, Meet and Docs. Administration is through Google's admin console.
Strengths: excellent spam filtering, a familiar interface, strong collaboration tools and reliable infrastructure.
Watch-outs: per-user subscription costs that grow with headcount, limited control over where some data is stored on lower plans, and a strong pull toward the rest of Google's ecosystem.
Microsoft 365
Exchange Online with Outlook, plus Teams, OneDrive, SharePoint and the Office apps on most plans.
Strengths: deep Outlook and calendar features, tight integration with Windows and Office documents, mature compliance and retention tools on higher tiers.
Watch-outs: licensing can be confusing, the admin portal is complex, and security defaults need careful review and hardening.
Comparison at a glance
| Factor | Hosted mail server | Google Workspace | Microsoft 365 |
|---|---|---|---|
| Typical pricing model | Per server or per account bundle | Per user per month | Per user per month |
| Collaboration suite | Usually separate tools | Docs, Drive, Meet | Office apps, Teams, SharePoint |
| Control over server location | High — you or your provider choose | Limited, more on higher plans | Region-based, more on higher plans |
| Spam and phishing filtering | Depends on configuration | Strong by default | Strong, with tuning |
| Administration effort | Higher, needs a capable provider | Low | Medium |
| Best fit | Many mailboxes, specific data or cost needs | Collaboration-first teams | Office- and Outlook-centric teams |
Key takeaway: There is no universally "best" email platform. Choose the one that matches how your team works and what your data obligations require — then make sure someone competent is responsible for managing it.
Questions that decide the choice
Work through these with your leadership team before choosing:
- What else do you need? If you also need shared documents, video calls and chat, a suite from Google or Microsoft may replace several separate tools. If you already have those, a hosted mail server can be the simpler and cheaper option.
- How many mailboxes, and how big? Large numbers of mailboxes, shared addresses or long archives change the cost picture significantly.
- Where must data be stored? Health, legal and government-adjacent work may have contractual or regulatory expectations about location. Our article on data residency in Canada explains the considerations; get legal advice for your specific obligations.
- Who will administer it? A self-managed mail server with no administrator is a liability. A cloud suite with nobody reviewing its security settings is also a liability.
- Which clients do people use? Heavy Outlook users with shared calendars often get on best with Microsoft. Teams that live in the browser often prefer Google.
- What are your continuity needs? Consider how you would reach email if your primary provider had an outage or your account was locked.
What good email hosting must include
Whichever platform you choose, insist on these essentials.
Security
- Multi-factor authentication for every user, without exceptions for executives.
- Strong spam, malware and phishing filtering, including protection against lookalike domains.
- Disabled legacy authentication protocols where possible.
- Alerts for suspicious sign-ins and new forwarding rules — a classic sign of account compromise.
Deliverability
Your domain needs correctly configured SPF, DKIM and DMARC records, and every other system that sends as your domain (website forms, CRM, invoicing) must be included. Our guide to SPF, DKIM and DMARC walks through the setup.
Backup and retention
Cloud providers keep your service running, but deletion by a user or an attacker can still remove data. Decide on a backup or retention approach that lets you recover a mailbox or a deleted folder, and confirm how long data is kept after an account is closed.
Separation from the website
Hosting email on the same small server as your website is common and risky. A website compromise can lead to spam being sent from the same IP, damaging your mail reputation, and a website migration can disrupt mail flow. Keeping them separate isolates failures.
Understanding the real cost
Licence price is the most visible number and often the least important. When comparing options, build a simple total cost of ownership over three years that includes:
- Subscriptions or server costs, including expected headcount growth.
- Administration time, whether that is an internal staff member or an external provider.
- Add-ons such as advanced threat protection, archiving, extra storage or backup tools.
- Migration effort, both now and potentially later if you change your mind.
- Training and support for staff who must learn a new client or interface.
For a team of ten that already lives in Google Docs, a suite subscription is usually straightforward value. For an organization with many shared mailboxes, role addresses and seasonal staff, per-user pricing can grow quickly, and a well-managed hosted server may be the more economical option. The figures depend entirely on your situation, so run the comparison with your own numbers.
Hybrid setups that work
Some businesses get the best result by combining approaches rather than choosing only one:
- Suite for staff, hosted server for systems. People use Microsoft 365 or Google Workspace, while automated notifications from applications go through a dedicated transactional email service with its own subdomain.
- Hosted mailboxes with a cloud collaboration tool. Email stays on a managed mail server for cost and location reasons, while documents and video calls use a separate platform the team already prefers.
- Separate domains for separate entities. Group companies sometimes run each brand on its own platform for legal or operational reasons, with clear routing rules between them.
Hybrid setups add moving parts, so they need clear documentation and an owner who understands how the pieces connect.
Migrating without losing mail
A well-run migration is invisible to staff. A sensible sequence:
- Inventory mailboxes, aliases, forwarders, shared mailboxes, distribution lists and the total data size.
- Create accounts on the new platform and pre-copy existing mail in the background.
- Lower DNS time-to-live values for MX records a day or two before cut-over.
- Switch MX records during a quiet period and run a final sync to pick up recent messages.
- Update SPF, DKIM and DMARC for the new platform.
- Reconfigure phones and desktop clients, with simple written instructions for staff.
- Keep the old platform available read-only for a short overlap period before closing it.
Next steps
If you are unsure which route fits, start by listing your mailboxes, the tools your team already uses and any data location requirements — that alone usually makes the decision clearer. DigiVort runs managed mail servers for clients who want control and predictable costs, and configures and secures Google Workspace and Microsoft 365 for those who prefer a suite. See our hosting and email services or start a project to plan a migration with no lost mail.
