Domailo vs Microsoft 365
Quick answer: Microsoft 365 and Exchange Online charge per user and offer full Outlook, large mailboxes and shared mailboxes with no extra license. Domailo charges per organization and works in the browser. For those who live in Outlook and the Microsoft ecosystem, Exchange is more complete; for those who want simplicity and a fixed price for the team, Domailo is more straightforward.
Side by side
| Criterion | Domailo | Microsoft 365 |
|---|---|---|
| Billing | Per organization: one price for the team, with limits on people, mailboxes and domains | Per user |
| Contract | Monthly plans with no lock-in or annual paid upfront (12 months for the price of 10), with a 30-day trial and card after domain verification | Exchange Plan 1 annual; Business Basic annual or monthly |
| Domains | Several domains in the same account: 1, 3 or 10 depending on the plan | Several domains allowed |
| Shared mailboxes | A mailbox can be linked to several people, each with their own login | Shared mailbox without license (up to 50 GB); each person who accesses it needs a license |
| Access | Browser, on desktop and phone; no IMAP/POP or native app for now | Outlook in the browser, desktop and phone |
| Other apps | Email only | On Business Basic: Teams, OneDrive and Office on the web |
How much does it cost for your team?
Monthly estimate considering one mailbox per person, on the entry plan of each service (Exchange Online (Plan 1): $4.00 per user, annual subscription with automatic renewal, before taxes).
| People | Domailo | Microsoft 365 |
|---|---|---|
| 2 | $5 (Startup) | $8.00 |
| 5 | $9 (Essential) | $20.00 |
| 20 | $19 (Team) | $80.00 |
Other Microsoft 365 plans
- Microsoft 365 Business Basic: $7.00 per user, annual plan, before taxes; US$ 5.40 without Teams · includes 1 TB OneDrive
When should you choose each one?
Domailo makes more sense if…
- You want a fixed price for the team instead of a license per person.
- The priority is managing domains, mailboxes and access without a complex admin console.
- You prefer to pay monthly, with no annual commitment.
- You want to connect the AI assistant the team already uses, such as Claude or ChatGPT, to the company mailboxes through MCP (from the Startup plan).
Microsoft 365 makes more sense if…
- The team uses Outlook on the desktop or needs IMAP and a native app.
- You need large mailboxes, archiving or compliance features.
- The company already uses Teams, OneDrive or Office.
Strengths and limitations of Microsoft 365
Strengths
- Full Outlook on desktop and phone.
- Shared mailbox of up to 50 GB with no license of its own.
- 50 GB mailbox already on the entry plan.
- Compliance features and integration with the Microsoft ecosystem.
Limitations for small teams
- Plan 1 requires an annual commitment.
- Whoever accesses the shared mailbox needs their own license.
- The admin center is more complex for a small company.
What customers report
- On Reclame Aqui, the Microsoft profile (covering every Microsoft product) is rated “Poor” (5.3 out of 10 from April to September 2026), with 45.2% of complaints resolved and a 19-day average response time. (Reclame Aqui)
- Reports of lost admin access, of lockouts by two-step verification with no support and of charges after cancelling Business Standard. (Reclame Aqui)
- Reviews describe the administration, spread across several portals, and the licensing as confusing. (Software Advice)
Public reports selected on October 12, 2026, linked to their source. They do not represent every customer and were not verified by Domailo.
How do you switch from Microsoft 365 to Domailo?
- Create your organization on Domailo and add the domain (the domain registration stays where it is).
- Create the mailboxes with the same addresses you use today and link the people on the team.
- Replace the MX, SPF and DKIM records in the DNS with the ones shown in the Domailo dashboard; from then on, new messages arrive on Domailo.
- Keep the Microsoft 365 account active for a few days to consult or export the history: Domailo does not import old messages.
Already decided to leave? See the Microsoft 365 alternative guide.
Frequently asked questions
Does Domailo work in Outlook?
No. Domailo works in the browser, including on mobile, and does not offer IMAP/POP yet. If the team depends on installed Outlook, Microsoft 365 is the better fit.
Do shared mailboxes cost extra on Microsoft 365?
The shared mailbox itself needs no license up to 50 GB, but each person who accesses it needs a license. On Domailo, the people included in the plan can access the mailboxes linked to them.
Can I pay for Domailo monthly?
Yes. Domailo has a monthly plan with no lock-in and an annual plan paid upfront: 12 months for the price of 10.