Easy Way to Send Mass Email to Every Contact in Your G Suite Account
Using G Suite and Gmail extension GMass, it’s easy to send a mass, personalized email to every email address in your Gmail account. It allows you to send bulk personalized email without exposing everyone in the 'To' field.

You just need to get all of the email addresses in the To field, compose your Subject and Message, and click on the GMass button (instead of the Gmail Send button).
1. Use the GMass “Build Email List” button
In Gmail, you can search your conversations using the Search bar which is there at the top. Once you have a list of matching conversations or keyword, you just need to type a keyword into the search bar and hit the GMass search button. It will search all the email conversations which match the keywords, from which It will find all of the email addresses in the From and To fields of those matching email messages.
For example, if you wanted to send a mass email to everyone with whom you had a conversation about “Market”, You could search for “Market” in your Gmail account, and then hit the GMass search button to instantly create a list of all those email addresses. Then you just need to compose the email and send using GMass button.
2. Use G suite Contacts to select all of your contacts, then hit the Email icon
In G suite, you can use the Google Contacts to select all or some of your contacts, and then hit the Email button to launch a Gmail Compose window with all of those addresses in the To field.
First, from inside Gmail, Go to contact:
Then, Go to the list of Contacts, select all of them with the checkbox tool, and click the Email Button.
Note - it will only select the contacts which appear on the current page, and you would have to go to the next page of contacts to separately select those. However, it will only allow you to select 250 contacts at a time.
After composing your email message, make sure that you hit the GMass button instead of the Gmail Send button to send individual personalized emails to each recipient.
3. Export the email addresses from G suite Contacts into a Google Docs spreadsheet
You can easily export all of your G suite Contacts as a CSV file, and then upload the CSV file into Google Sheets, and then use GMass to connect to your Google Sheets to get the email addresses from your sheet.
First, in G suite Contacts, export all or some of your contacts to a CSV file.
Choose Export option and then choose the Contacts you want to export. Then select the CSV format to get the exported contact in CSV format.
Then, upload the CSV file into your Google drive or you can select it from your system directly.
After your sheet is created, you should clean it up by deleting the extra columns. If you don’t, your sheet might have more data than GMass can process. So, just delete all the empty columns. In the sheet only users First Name Last Name & email address needs to be there.
You can also create your own contact using Google sheet, create the column name with First Name Last Name & Email address then save that sheet, after which using GMass you can use that sheet to get the email addresses into your Gmail compose window.
You will have a Compose window with all of the email addresses in the To field. If you have more than 2,000 addresses, GMass will consolidate the addresses into an “alias” address, as is shown in the screenshot below. This alias address is an address that represents all addresses.
As it is shown in the above screenshot, GMass may also hide the Gmail Send button in certain cases, to prevent you from clicking it accidentally and making a huge mistake. Hitting the GMass button will send a tracked, personalized email to each contact, but if you are hitting the Gmail Send button, it will send one email to all of your recipients, which exposes everyone in the To field to each other.