Google Workspace vs Microsoft 365 for a Small Business (2026)

Google Workspace and Microsoft 365 are the two default answers when a small business wants email on its own domain, and both are good. The real differences are in what else you are paying for, how the admin experience feels at five or fifteen people, and whether you need a full office suite at all. This comparison stays neutral, then shows a free option if email is the only thing you are missing.

Quick answer

Choose Google Workspace if your team lives in the browser, collaborates in shared documents all day, and wants the simplest admin console. Choose Microsoft 365 if you need desktop Word and Excel, Outlook as the primary client, or you are already tied to Windows management and Teams. Neither has a free business tier; both are paid per user per month. If you only need mailboxes and a sending API, a free provider such as OquMail covers that without the suite.

Feature comparison

• Mailboxes: both are one mailbox per paid user; shared mailboxes and groups are available in both, with Microsoft's shared mailboxes not needing a licence up to a size cap
• Free plan: neither offers a free business plan; both offer a short trial
• API: Google exposes the Gmail API; Microsoft exposes Microsoft Graph. Both are built for mailbox access rather than high-volume transactional sending
• DNS guidance: both have setup wizards. Google needs MX, SPF, DKIM and DMARC; Microsoft additionally uses an autodiscover CNAME and two DKIM CNAMEs
• IMAP/SMTP: both support IMAP; Microsoft has been disabling basic authentication and SMTP AUTH by default, so third-party apps need modern auth or an admin toggle
• Storage: Google Business Starter pools a fixed amount per user across Drive and Gmail; Microsoft gives a 50 GB Exchange mailbox plus separate OneDrive storage on Business plans

Where Google Workspace wins

• Search and threading in Gmail are still the benchmark for people who process a lot of mail
• Real-time co-editing in Docs and Sheets is smoother than the web versions of Word and Excel
• Admin console is simpler; a non-technical owner can add a user, reset a password and set up a group without training
• Android phones and Chromebooks need no extra configuration

Where Microsoft 365 wins

• Desktop Office apps (on Business Standard and above) matter if you exchange complex spreadsheets with accountants or clients
• Exchange gives larger default mailboxes and mature rules, retention and litigation hold on the right plans
• Teams is bundled, so calling and meetings do not need another vendor
• Windows device management and conditional access fit companies with an IT provider

Total cost at 5 and 15 users

Both vendors charge per user per month, and the entry business plans are within a couple of dollars of each other. At 5 users the annual bill for either sits in the low hundreds of dollars. At 15 users it reaches the low thousands per year, and the difference between the two vendors is smaller than the difference between an entry plan and a mid plan. The hidden cost is upgrade pressure: pooled storage on the entry Google plan and the missing desktop apps on Microsoft Business Basic push many teams one tier up within a year.

The free third option: OquMail

If you already use Notion, Slack, Canva or a Google account for documents, a suite is mostly paying for things you have. OquMail gives a small business the email part on its own domain for free, with the same standards-based IMAP and SMTP access that Outlook and Apple Mail expect, and a simple API for receipts and notifications.

• Free plan: up to 15 mailboxes, 3 domains, 5 GB per mailbox, no credit card
• Webmail included; IMAP/SMTP for Outlook, Apple Mail, Thunderbird and phones
• IMAP mail.oqumail.com port 993 (SSL/TLS); SMTP mail.oqumail.com port 587 (STARTTLS)
• Guided SPF, DKIM and DMARC with live DNS verification; MX is mail.oqumail.com priority 10
• Transactional send API at https://api.oqumail.com/api/v1/emails with Bearer API keys (from, to, subject, html)
• Per-message delivery logs so you can see the exact response a receiving server gave

Verdict by scenario

• Agency or startup working in shared docs all day: Google Workspace
• Accounting, legal or construction firm with heavy Excel and Word use: Microsoft 365 Business Standard
• Company with an outsourced IT provider managing Windows laptops: Microsoft 365
• Team that needs professional inboxes plus an API and has no suite requirement: OquMail free plan, upgrade later if you outgrow 15 mailboxes

Common questions

Can I use Outlook desktop with Google Workspace?

Yes. Google Workspace supports IMAP and there is also a Google sync tool for Outlook. Calendar and contacts sync work best with the Google tools rather than plain IMAP.

Do I lose anything moving from Microsoft 365 to a free email host?

You lose Teams, OneDrive and the Office licence, and you keep email. Export your mailbox with Outlook or an IMAP copy tool first, then repoint MX. Plan the move for a quiet day and keep the old tenant active for a week to catch stragglers.

Which is easier to set up DNS for?

Google needs fewer records. Microsoft's autodiscover CNAME trips people who host their website elsewhere, and its DKIM CNAMEs must be added before you enable signing. Either way, verify SPF and DKIM before you move the MX records (the settings that tell the internet where to deliver email for your domain).