How to Connect Your Email to Outlook.com / Outlook Web App

Email Setup Guides|
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Connect Your Email to Outlook.com Web
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Connect Your Email — Complete Guide Series
1Outlook Desktop (Windows)2Outlook.com Web App3iPhone Mail App (iOS)4Android Gmail App5Mozilla Thunderbird6Manual IMAP / SMTP Setup (Any App)7Troubleshooting Common Issues

Outlook.com / Outlook Web App lets you read and send mail from any browser, without installing anything. You can add your own custom mailbox as a connected account so it shows up right alongside a Microsoft/Outlook.com account.

You'll need a free Outlook.com / Microsoft account first (or an existing Microsoft 365 mailbox). Your custom mailbox is then linked into it as a connected account.

Step-by-Step

1

Sign in to Outlook.com

Go to outlook.com and sign in with your Microsoft account.

2

Open Settings → Sync Email

Click the gear icon (⚙) top-right → General → Sync email, then choose Other email accounts.

3

Add the Connected Account

Enter your full mailbox address and password. If asked for advanced/manual settings, use the IMAP and SMTP details from your My Emails page (incoming port 993, outgoing port 465 or 587, both with SSL/TLS enabled).

4

Wait for the First Sync

Outlook.com will pull in your existing mail in the background. You can keep using the web app while it syncs; new mail usually appears within a minute or two.

Tip: once connected, you can also send mail as your custom address from Outlook.com by selecting it in the "From" field when composing.

Frequently Asked Questions

Yes, Outlook.com / Outlook Web App requires a free Microsoft account as the "host" account, into which you connect your custom mailbox.

Yes, go back to Settings → Sync email → Other email accounts and remove it at any time; your mailbox itself is unaffected.
Quick Checklist

Microsoft/Outlook.com account

Full email address

IMAP/SMTP details from My Emails

Open My Emails →