# Sign in

Source: https://yamm.com/help/usage/setup/sign-in/

You need a Google account to use YAMM.

When you run a mail merge, YAMM sends your emails from the Google account you are currently signed in to in Google Sheets. If you have multiple Google accounts, such as a personal account and a work account, you can [switch between them](#switch-to-another-account) to ensure you are using the correct account in YAMM.

## Check which account you're using

Confirm which Google account YAMM is currently running with before launching a campaign.

1. Open your contact list spreadsheet.

   ![Email, First name, and Last name column names entered in row 1 of a new spreadsheet](https://yamm.com/help/images/docs/usage/quickstart/prepare-contacts-list-in-google-sheet-2.png)

2. Select **Extensions > Yet Another Mail Merge: Mail Merge for Gmail > Check quota / upgrade quota**.

   ![](https://yamm.com/help/images/docs/usage/setup/sign-in/quota-menu.png)

The Quota screen shows the Google account YAMM is currently running with, along with your YAMM plan.

![The Quota screen shows your email and YAMM plan.](https://yamm.com/help/images/docs/usage/setup/sign-in/quota-screen.png)

## Create a browser profile for each Google account

If you use several Google accounts, create a separate browser profile for each one, with a single Google account signed in per profile. Separate profiles keep each account in its own browser session, which is what lets Google add-ons work reliably.

Warning: Signing several Google accounts into the same browser session is the main cause of YAMM technical issues — duplicated emails, delivery problems, [quota errors](https://yamm.com/help/usage/troubleshooting/quota-issues/index.md#why-is-your-quota-lower-than-expected), and [freezes](https://yamm.com/help/usage/troubleshooting/add-on-loading/index.md#yamm-freezes-or-takes-time-to-load). If you are already signed in to several accounts, [log out from multiple accounts](https://yamm.com/help/usage/troubleshooting/quota-issues/index.md#log-out-from-multiple-accounts) first.

The steps below cover Google Chrome. On other browsers, see [Create a profile in Microsoft Edge](https://support.microsoft.com/en-us/microsoft-edge/sign-in-and-create-multiple-profiles-in-microsoft-edge-df94e622-2061-49ae-ad1d-6f0e43ce6435) or [Create a profile in Apple Safari](https://support.apple.com/guide/safari/use-profiles-ibrw1099/mac).

[Watch the video on YouTube](https://www.youtube.com/watch?v=qdC6FAzOAfI)

1. In your Chrome browser, select your profile picture at the top right, and click **Add Chrome profile**.

   ![Chrome profile menu with Add Chrome profile selected](https://yamm.com/help/images/docs/usage/setup/sign-in/create-chrome-profile-for-specific-google-account-1.png)

2. Click **Sign in**.

   ![Set up your new Chrome profile page with the Sign in and Stay signed out buttons](https://yamm.com/help/images/docs/usage/setup/sign-in/create-chrome-profile-for-specific-google-account-2.png)

   If you don't want to link the Chrome profile with a Google account, select **Stay signed out** and pick a name for your profile.

3. On the **Sign in to Chrome** page, sign in with your Google account.

4. Confirm whether to sync this profile between devices.

   ![Turn on sync page listing bookmarks, auto-fill, extensions, and history, with the No Thanks and Yes I am in buttons](https://yamm.com/help/images/docs/usage/setup/sign-in/create-chrome-profile-for-specific-google-account-3.png)

5. Choose your search engine, and click **Set as default**.

You now have one browser profile per Google account. Switch between them to use YAMM with each account.

## Switch to another account

**Prerequisites**

- You have [created a browser profile for each Google account](#create-a-browser-profile-for-each-google-account).

1. Open your web browser.

2. In the upper-right corner of the browser, click the profile icon.

3. Select the profile you want to use.

   ![Select a user profile in the Other profiles section](https://yamm.com/help/images/docs/usage/setup/sign-in/switch-between-chrome-profiles.png)

You have switched to another account. You can now launch and use YAMM with the new account.

## What's next

- [Run mail merges from multiple accounts](https://yamm.com/help/usage/launch-campaign/send-from-multiple-accounts/index.md#run-mail-merges-from-multiple-accounts)