Privacy Policy

This Privacy Policy is meant to help you understand what information we collect and why, how data is classified and how you can delete it.

About Mergo

Mergo is a mail merge add-on for Google Sheets and Gmail that:

  • Connects to your Gmail to retrieve your drafts, and lets you choose the draft you want to reuse as the email template

  • Reads your Google Sheets (email addresses, column headers, cell content)

  • Sends emails according to the spreadsheet data as a campaign.

Some additional features can:

  • Connect to your Google Drive in order to insert attachments to your emails

  • Retrieve contacts from your Google Contacts' list

  • Provide reports on your email campaigns (emails opened, clicked, responded, bounced, unsubscribed).

This add-on is tightly integrated to your Google account and the data stored in the said account. When installing the add-on from the Google Workspace Marketplace, you will be prompted to authorize different accesses to your Google account. Those authorizations will only be used to perform the service you are requesting from the add-on you have installed.

To remove the add-on access to your Google account, you must uninstall the add-on from the Google Workspace Marketplace (see “User Account Deletion”).

Add-ons are created and powered by Google Apps Script, on Google servers.

Information gathered by Mergo will never be sold or shared to external people. When we need to store data outside of your Google account, we use Firebase, a serverless database developed by Google, so your data never leaves Google servers. We only store in Firebase data which is absolutely needed to provide our users the service offered by this add-on. Most data collected by our add-ons are directly processed within Google Apps Script and are not saved in any database for later reuse.

Our App's use of information received, and App's transfer of information to any other app received from Google APIs will adhere to Google API User Data Policy, including the Limited Use Requirements.

User Account Deletion

By using Mergo, we only access data that is absolutely necessary for the add-on to run correctly. If you wish to stop using our service, simply follow the steps below to uninstall Mergo from your Google account:

  1. Go to the Google Workspace Marketplace Manage apps page

  2. Next to Mergo, click the menu icon

  3. From the drop down menu, click Uninstall

Uninstalling Mergo will interrupt all the add-on's functionality and activities on your Google account.

However, there is no automatic deletion of your user data in our database (Firebase). To get your data deleted, please send your request to and we will proceed to the deletion within 30 days.

Data Classification

Depending on its security impact, data is classified according to the five following categories:

  1. Confidential data has the highest level of security. Only the user has access to it. All emails from your Gmail box and files from your Google Drive are strictly confidential and Mergo never has access to confidential data.

  2. Sensitive data is needed for Mergo to perform the service you are requesting from the add-on, and is never shared out of this scope. All sensitive data such as your recipients' email addresses and your email content remain under your control, within your Google account, Google Sheets, Gmail, and Google Contacts.

  3. Shareable data can be shared to specific people within the company. For example, the Mergo Support Team may ask users to share their Google Sheets for troubleshooting purposes. We will never keep a copy of your spreadsheet data and we strongly encourage you to remove us access to your files once your request has been addressed and resolved.

  4. Public data can be shared as public records, like all the content published in this Mergo's website.

  5. Private data belongs to individuals who are responsible for the maintenance and backup.

Data Access

When you install Mergo on your Google account, you are asked to accept the following authorizations:

Why does Mergo need those access scopes?


  • To send emails on your behalf

  • To retrieve your Gmail draft as the email template you'll use to send your mail merge with Mergo

  • To check your inbox and update the tracking stats if recipients replied to your emails

Google sheets:

  • To read your list of recipients

  • To provide a campaign tracking report

Google Docs:

  • To convert Google Docs into Gmail drafts and reuse them as templates for your campaigns

Google Drive:

  • To link selected Google Drive files to specific recipients and send personalized attachments

Google Contacts:

  • To import your contacts from Google Contacts

External service:

  • To get access to Firebase, a database service from Google

View your country, language, and timezone:

  • To send your scheduled mail merge at the right date and time according to your location

  • To give you the right "sent date" in the merge statuses of your spreadsheet

  • To display Mergo in your language

Third-party web content in prompts and sidebars:

  • To open Mergo as a sidebar in your Google applications

Data Storage

Mergo stores these user and usage data in the Google Cloud Platform:

Type of data

User Identification

We store

▸Gmail address and username.
- To identify you as a Mergo user.

We do not store

▸Any other personal information.

Mailing document / Email

▸Subject lines of your emails.

▸ID of your Gmail draft - so Mergo can retrieve and reuse it as a template.

▸Your Gmail draft's content, emails received, and any other email content: All your emails stay in your Gmail box and you are the only one having access to your mailbox. We only access your draft so you can send your mail merge with Mergo, and the emails you received to track responses on your spreadsheet. We don't store any of the content of your emails in an external database.

Campaign sheet data
(Mailing lists)

▸Email addresses of your unsubscribed recipients - so you can remove them from your future mailing lists.

▸Bounced email addresses.

▸Email addresses and any other personal information of your recipients.

Files and their content

▸Identifiers of your Google Sheets file that contains your campaign sheet (spreadsheet & worksheet IDs).

▸Title of your spreadsheet.

▸Name of your worksheet.

▸Content and data of your campaign sheet.

- We don't make any copies of your spreadsheet data or store information on your recipients (email addresses, names, phone numbers etc.) on any database.

Your campaign sheet data stays in your Google Sheets that solely belong to you.

▸Contacts from your imported Google Contacts.

Email tracking data

▸Email tracking metrics (the numbers of emails sent, opens, clicks, replies, bounces, unsubscribes - so you can have access to your campaign stats).

▸Personally Identifiable Information of your recipients (email address or another source of identity).

Subscription data

▸Current plan details (Premium Individual or Workspace licenses).

▸Transaction handler (Paypal subscription & transaction IDs).

▸The registered subscriber name of the person or organization.

▸Credit card details.

- Mergo uses Paypal as its secure & trusted payment gateway.

Mergo Sidebar (User Interface) Input

▸Saved campaign settings: Sender Name, Recipient column, Email column, ...

▸Email addresses of your recipients.

Retention time

We only retain collected information for as long as necessary to provide you with your requested service. What data we store, we’ll protect within commercially acceptable means to prevent loss and theft, as well as unauthorized access, disclosure, copying, use or modification.

Changes to this Privacy Policy

This Privacy Policy is subject to occasional revision, and we reserve the right to modify this Privacy Policy relating to Mergo at any time, effective upon posting of an updated version of this Privacy Policy.

When we do, we will revise the updated date at the bottom of this page and make available on the same website an archived version of the Privacy Policy before its revision: Continued use of Mergo after any such changes shall constitute your consent to such changes.

If your business or legal entity needs to be explicitly notified in case of changes to the terms, you may send an email to to be added to our notification list.

Last updated: February 21, 2022