Outlook.com includes encryption and prevent forwarding features that ensure your confidential and personal information you share via email stays encrypted and doesn't leave Microsoft 365.

Add a custom domain name In Microsoft 365 for Business, you can add a company domain name you own so that your users can have email addresses branded with your company name.

As of February 28, 2021, the specific "Outlook.com Premium" and "Ad-Free Outlook.com" subscriptions no longer include the ability to use a custom domain with Outlook.com. To continue using a …

What is an alias? An alias is an additional email address associated with your Outlook.com account. An alias uses the same inbox, contact list, and account settings as your primary email address. You can …

Starting November 30, 2023, Microsoft 365 Personal or Microsoft 365 Family subscribers will no longer be able to create a new email address for any personalized domain associated with their …

Create an address book in Outlook 2013 or Outlook 2016 to look up and select names, email addresses, and contact groups when you send email.

Learn how to get Outlook set up to work with Microsoft 365, POP, IMAP, or Microsoft Exchange-based email accounts.

If you can't configure your custom email domain account as an Exchange account in Outlook, this workaround might help.

Send an email to a channel in Microsoft Teams, reply to an email, view the original email, or troubleshoot a bounced email.

Mail merge lets you create a batch of documents that are personalized for each recipient. For example, a form letter might be personalized to address each recipient by name.