Outlook for Business: Microsoft 365 or Outlook with Email in Your Company's Name?

"Outlook for business" is used to mean two different things. The first is a Microsoft 365 Business subscription, which hosts your company email on Microsoft's servers along with Office and Teams. The second is using the Outlook app itself with email in your company's name from any provider. Outlook is an app, and Microsoft 365 is a service.

This article is for business owners who like Outlook, want to read their work email in it, and are wondering: do I need a Microsoft 365 subscription? You will learn what each option includes, the official prices, a direct comparison between them, and when each one suits you.

What is Microsoft 365 Business?

Microsoft 365 Business is a set of subscriptions for companies with up to 300 users. Each user gets an Exchange Online mailbox on the company domain, along with Microsoft's work tools. This is "Outlook for business" in Microsoft's official sense, and the details are on the Microsoft 365 plan options page.

The three main plans and their prices, according to the official Microsoft 365 pricing updates page as of October 2026 (in US dollars per user per month, with Teams, effective July 1, 2026):

Microsoft says prices may vary by country and currency, and that existing customers keep their price until renewal. So check the purchase page for your country before you decide.

Personal Outlook.com no longer offers custom-domain addresses

In the past, some Outlook.com subscribers connected a custom domain to their personal account. This feature is no longer available to new users, so an account you create on Outlook.com today has an address like name@outlook.com or name@hotmail.com.

An Outlook.com account is excellent for personal use, and we covered the steps in our guide to creating an Outlook account. But for businesses, there are only two ways to get an address like sales@company.com with Outlook: a Microsoft 365 subscription, or email from another provider that you read in Outlook.

Using Outlook with official email from any provider

The Outlook app, on a computer or a phone, accepts any email account that supports IMAP and SMTP. These protocols are open standards that almost every email service uses, so you can host your company email with any provider and read it in Outlook the same way.

The steps in brief, as on Microsoft's page Add an email account to Outlook:

• Open Outlook and choose Add account.

• Type your company address, such as ahmed@company.com.

• If Outlook does not detect the settings automatically, choose IMAP and enter the incoming and outgoing servers and ports from your provider.

• Enter your password and wait for your messages to sync.

For the full illustrated walkthrough for each version, see our guide to adding your company email to Outlook, and for the correct server and port values, see the article on IMAP and SMTP settings. To learn what the app offers after setup, such as rules, signatures and the calendar, read our explanation of Outlook features.

Microsoft 365 vs. Outlook with email in your company's name

Here is a direct comparison between a Microsoft 365 Business subscription and using Outlook with official email from Emailat:

Last checked: October 2026. Emailat prices are in Egyptian pounds as of this update in November 2026: 1,900 EGP per year for the first mailbox and 400 EGP for each additional mailbox. Up-to-date prices in your currency are always on the pricing page.

A practical example for a team of 5

If your team of 5 needs email only, Business Basic costs 5 × 7 × 12 = US$420 per year at the official price above. Five mailboxes on Emailat cost 1,900 + (4 × 400) = 3,500 EGP per year at the time of this update in November 2026, and you read them in Outlook the same way.

But a fair comparison takes honesty: a 365 subscription gives you Teams, OneDrive and the web Office apps, and that is real value if your team uses them. If you do not need them, you are paying for tools you do not use.

When should you choose Microsoft 365?

• Your team relies on Teams for meetings and chat.

• You need a shared calendar and meeting room booking between employees.

• You want to manage employee devices and security policies from one console.

• You need desktop Office licenses for every employee anyway.

When is Outlook with email in your company's name enough?

• Your main need is professional email on your own domain.

• You already have Office, or you use other tools for documents and meetings.

• You want a simple annual subscription, local payment methods and support in Arabic.

• Your team is small or medium-sized, and you want to add mailboxes whenever you need them.

For a broader comparison that includes Google Workspace and others, see our comparison of 365 and Workspace and other email providers, and learn the basics of official business email if you are starting from scratch.

What about Exchange Online on its own?

Microsoft also sells Exchange Online as a standalone email service without Office and Teams, which is a middle option for anyone who wants Microsoft email only. It suits companies that want Exchange features, such as shared calendars and shared mailboxes, without paying for the other tools. But it is still a monthly per-user subscription, and it requires connecting the domain and managing accounts from the Microsoft admin center in the same way.

Which version of Outlook suits company email?

The Outlook name today covers more than one app, and all of them accept company email, but with differences worth knowing:

• Outlook mobile (Android and iPhone): Free, adds IMAP accounts easily, and brings email and calendar together.

• The new Outlook for Windows: The app Microsoft is moving to on Windows, free for basic use, and it supports IMAP accounts.

• Classic Outlook for desktop: The well-known app in Office, which comes with the plans that include desktop apps or with a purchased copy of Office.

• Outlook for Mac: Available to Mac users, and it also supports adding other email accounts.

If you do not have desktop Office, the Outlook mobile app together with the new Outlook for Windows is enough to read your company email every day without any subscription.

Common mistakes when choosing Outlook for business

• Subscribing to 365 just to use Outlook: Outlook itself does not require 365, so ask first: does your team really need Teams and Office?

• Relying on personal Outlook.com for work: An outlook.com address does not carry your company name, and it stays registered to one person.

• Choosing POP instead of IMAP: POP does not sync messages between your computer and your phone.

• Ignoring the user limit: Business plans are designed for companies with up to 300 users; beyond that you need the more expensive enterprise plans.

• Sharing one mailbox between several employees with one password: Whichever option you choose, give each employee their own mailbox, and use forwarding or shared mailboxes for departments.

• Forgetting to calculate the cost of a full year: The monthly per-user price adds up quickly with the number of employees, so work out the annual cost for your whole team before you compare.

Connecting your domain to Microsoft 365, in brief

If you decide Microsoft 365 is the better fit, here is a summary of the steps to connect your domain, according to the page Add a custom domain to Microsoft 365:

• In the Microsoft 365 admin center, open Settings, then Domains, and choose Add domain.

• Prove you own the domain by adding a TXT record at your domain registrar; verification can take minutes and sometimes up to 48 hours.

• Create the users and their mailboxes before changing the MX record, so no messages are lost during the move.

• Add the DNS records required for Microsoft services, including MX, manually or automatically if your registrar supports it.

If your domain hosts a website, Microsoft says the site keeps working where it is, because only the email records change. The same principle applies if you choose another email provider: email and website are two separate services on the same domain.

The bottom line

Outlook is an excellent app for reading work email, and it does not require a Microsoft 365 subscription. Choose 365 if your team truly needs Teams, Office and shared calendars, and choose email in your company's name with Outlook if what you need is professional email at a simple annual cost.

Need help setting up Outlook? Browse the help center.