How I Use a Mail Merge to Send Personalized Mass Emails

Worried you’ll skip someone or sound robotic with mass invites? I messed that up, too, until I learned about mail merge. With this trick, it takes minutes to send a mass of event invitations or newsletters with a personal touch.

What Is a Mail Merge?

A mail merge lets you send personalized messages to a large group of contacts in a single go. You can prepare a message template—often an email, a form, or a newsletter—and personalize it for many recipients without manually editing every mail.

I often use it when I need to reach several people at once, but I still want to address them by name and include specific information relevant to each person.

Think of it as an automated system that customizes your email template with individual names, addresses, or any other data you want to include.

A mail merge usually combines three elements:

1. A Main Document (like an email or a letter template in Word).
2. A Data Source (like an Excel spreadsheet, Google Sheets, or Outlook contacts with details such as names, addresses, or order numbers).
3. The Mail Merge Tool (a feature in Microsoft Word or third-party add-ons in Gmail).

By matching placeholder fields in your main document (e.g., “<<FirstName>>”) with corresponding fields in your data source (e.g., “John”), the tool automatically sends individual emails that look tailor-made for the person receiving them.

How to Prepare for a Mail Merge

Regardless of the data source, I realized the importance of creating clean, well-organized data. If your contact list is incomplete or messy, no matter how good the rest of your mail merge process is, your emails might end up with errors or missing details. So, make it once and use it repeatedly.

1. Identify the key fields: Decide what information you need to personalize your emails. Usually, this includes first and last names, email addresses, and maybe locations or recent order details.
2. Create an Excel File and add the data: Use column headers for each piece of data. For example:
   • FirstName
   • LastName
   • Email
   • Company
   • Phone Number
3. Clean Your Spreadsheet: Remove any extra spaces or formatting issues, and verify all email addresses are correct. A neat, consistent data source makes the process smooth.

When it comes to mail merge tools, I use the Microsoft 365 suite (Word, Excel, and Outlook) because of its robust features and seamless integration. However, you can also use Gmail and Google Sheets for quick merges or when working on small collaborative projects on Google’s platform.

Different mail merge tools offer various features and complexity levels. I suggest picking the tool that matches your workflow, the size of your mailing list, and your personal preferences.

Create a Mail Merge With Excel and Word (Via Outlook)

Word gives you a lot of control over a mail merge with its Mailings ribbon tab, which includes a Mail Merge wizard. But I am using the more straightforward approach here with the options on the Mailings tab.

Preparing the Data

Put some effort into creating and maintaining an Excel spreadsheet with your contact data. And please, back it up somewhere safe.

Here are some tips to prepare and format the spreadsheet correctly.

1. If your data is in Excel, you can prepare it directly. If it’s in a .txt or .csv file, you must import it into Excel and prepare it.
2. Ensure each column has a clear header (e.g., “FirstName,” “LastName,” “Email”).
3. It’s a best practice for spreadsheet column names to match mail merge field names. Also, you need separate first and last name columns to address someone by their first name.
4. Format the columns with any numeric data, as they can be tricky. For instance, ZIP/postal codes must be formatted as text to keep any leading zeros (e.g., 00499). Format them as text before import.
5. In the Word template, place the appropriate symbol for any currency or percentage before or after a merge field. Without them, any number may not make sense to the recipient.

Start the Mail Merge in Microsoft Word

Craft the body of the email in Microsoft Word and save the document on your desktop as a template for the future.

1. Create or open the Word document you want to use for mail merge.
2. Click on the Mailings tab in the ribbon.
3. Select Start Mail Merge > E-mail Messages from the dropdown menu.

Now write your email message in the blank document. Leave blank spaces where you want to insert personalized information. Word will insert the merge fields from your data source here.

Next, it’s time to grab the data from Excel.

1. Click on Select Recipients > Use an Existing List.
2. Browse to the source Excel file and click on Open in the dialog box to select it.
3. If you don’t have a mailing list yet, you can create one from the Type a New List option in the dropdown.
4. Choose File > Save.
5. Wherever you want personalized information (like someone’s first name), click Insert Merge Field.
6. Choose the relevant Excel column header.
7. On the Mailings tab, click Preview Results.
8. Use the arrow buttons to cycle through different recipients.

Verify that names, companies, and other fields appear correctly in the body text. You can also use the Check for Errors option to catch blank fields.

Send the Merged Emails Via Outlook

If your preview shows consistent results, then all that’s left to do is hand over the last stage to Outlook.

1. Click Finish & Merge > Send Email Messages.
2. Specify these fields in the Merge to Email options.
   • To field: Choose the Excel column with the recipient emails (e.g., “Email”).
   • Subject line: Add your desired subject text here (you can’t insert a mail-merge field here in a basic Word mail merge).
   • Mail format: Select HTML for a nicely formatted email.
3. Hit OK, and Word will hand off each personalized email to Outlook.
4. Open Outlook to confirm messages are in your Outbox or Sent folder.

Create a Mail Merge with Gmail & Google Sheets

Gmail and Google Sheets are also an alternative method for mail merges. While Gmail doesn’t have built-in mail merge capabilities, you can achieve similar results using Google Sheets and some excellent mail merge add-ons.

The process involves storing data in Google Sheets and sending emails using a Chrome extension like Mail Merge. Note that many add-ons do not strictly require a Google Workspace subscription. They work within the free version of Gmail but can have specific features or volume constraints.

Mail merges remain one of my go-to methods for sending large batches of personalized emails. Mail merge isn’t only for business emails. You can use it at home to send holiday greetings, do community outreach, or communicate with teachers and students.

The critical step is segmenting your data with a well-crafted template. Beyond that, follow the tips above and consider the time zones if you have a global contact list.