You can also build a spreadsheet if you need to include more information than what is available in your Outlook Contacts. If all the information you want to use in your mail merged email is in your contacts, that’s the quickest and easiest data source. You can have more than one kind of data source– where the recipients’ name, email address, etc are located. But it can be done in Outlook, sending personalized emails to many people all at once! We normally think of doing that in a letter in Word.

Mail merge is the tool that allows you to create one document, like a letter or an email, and send it to many people with their personalized information inserted throughout so that it feels as though it was written just to them.