How to Mail Merge with Outlook and Google Sheets

If you are an Outlook or Microsoft 365 user, you can still use Google Sheets to send personalized emails to multiple people at once with the help of Mail Merge.

The Mail merge add-on for Gmail lets you send personalized emails to your contacts in bulk. You can pull file attachments from Google Drive and include them in the outgoing emails. The emails can be sent immediately or scheduled for sending at a later date and time.

If you are an Outlook or Microsoft 365 user, you can still use Google Sheets to send personalized emails to multiple people at once with the help of Mail Merge. All you have to do is add your Outlook account to Gmail as an alias and the Mail Merge add-on will be able to send emails through your Outlook account.

Generate an App Password for Outlook

The first step is to generate an app password for your Outlook / Microsoft 365 account.

  1. Go to, sign-in with your Outlook account and choose Advanced security options.
  2. Scroll down to the App passwords section and click Create a new app password.

Outlook App Password

Add your Outlook Account to Gmail

Go to your Gmail account and choose Settings from the gear icon. Switch to the Accounts tab and choose Add another email address under the Send mail as section.

Add another email address

You can now add your Outlook account as an alias in Gmail. Enter your name and Outlook email address and click Next Step. Make sure you choose Treat as an alias.

On the next screen, enter the following details:

SMTP Server:
Port: 587
Username: Your Outlook email address
Password: The app password you generated earlier

Add Outlook SMTP Server

Click Add Account and Gmail will send a verification code to your Outlook email from Enter the code in Gmail and your Outlook account will be added as an alias in Gmail.

Sending Email with Outlook in Mail merge

Now that you have added the Outlook email address as an alias in your Google account, go to to open a new Google Spreadsheet and configure Mail merge. You will now be able to send emails from your Outlook account through the Mail Merge add-on.

Mail merge with Outlook

Amit Agarwal

Amit Agarwal

Google Developer Expert, Google Cloud Champion

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India.

Amit has developed several popular Google add-ons including Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory


Awards & Titles

Digital Inspiration has won several awards since it's launch in 2004.

Google Developer Expert

Google Developer Expert

Google awarded us the Google Developer Expert award recogizing our work in Google Workspace.

ProductHunt Golden Kitty

ProductHunt Golden Kitty

Our Gmail tool won the Lifehack of the Year award at ProductHunt Golden Kitty Awards in 2017.

Microsoft MVP Alumni

Microsoft MVP Alumni

Microsoft awarded us the Most Valuable Professional (MVP) title for 5 years in a row.

Google Cloud Champion

Google Cloud Champion

Google awarded us the Champion Innovator title recognizing our technical skill and expertise.

Email Newsletter

Sign up for our email newsletter to stay up to date.

We will never send any spam emails. Promise.