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Add-on loading

Fixes for YAMM loading problems — reinstall the add-on, recover when it freezes, fix a missing add-on menu, and what to do when only a Help button shows.

Reinstall YAMM​

If YAMM doesn't work as expected and there's no specific solution, reinstall the add-on.

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You can remove YAMM from the add-on store only if you installed it from the add-on store. If you installed YAMM from the marketplace, follow Uninstall.

Open a new or existing Google Sheet.

New Google Sheet open in the browser

Click Add-ons > Manage add-ons.

Manage add-ons in the Add-ons menu

Click the three dots on the YAMM icon > Uninstall.

Uninstall in the three-dots menu on the YAMM icon

Search for Yet Another Mail Merge and click Install to reinstall.

Yet Another Mail Merge search result with the Install button

See Install YAMM for more.

YAMM freezes or takes time to load​

If YAMM freezes, nothing appears in the pop-up, or no buttons respond, try these in order:

1. Try YAMM on another browser​

Browser updates can temporarily affect YAMM. Switch to another browser (e.g., Firefox or Safari if you're on Chrome).

2. Disable browser extensions​

Ad blockers and other extensions can block scripts. In Chrome: three-dots menu > More Tools > Extensions.

Extensions page opened from More Tools in the Chrome menu

Disable or remove the extension.

Browser extension being disabled or removed

3. Sign out and log in with only one account​

Multiple Google accounts in the same browser cause conflicts. See Log out from multiple accounts.

4. Try YAMM on another network​

Some corporate networks block YAMM. Try from home (no proxy). Workspace admins should whitelist yet-another-mail-merge.com, googleapis.com, gstatic.com, cloudflare.com, and firebaseapp.com.

5. Try YAMM in incognito​

Incognito mode bypasses cache, history, extensions, and ensures you're not signed in with multiple accounts. If YAMM works there, the issue is local — clean up cache and extensions.

6. Open your browser console and send us a screenshot​

In Chrome: menu > More Tools > Developer Tools.

Developer Tools under More Tools in the Chrome menu

In Firefox: menu > Web Developer > Web Console.

Web Console under Web Developer in the Firefox menu

In Safari: Preferences > Advanced > check Show Develop menu in menu bar, then Develop > Show JavaScript Console.

Show Develop menu in menu bar option in the Safari Advanced preferences

Click the Console tab. If there are JavaScript errors, they appear in red.

Developer tools console javascript

Send a screenshot via the support form.

The YAMM add-on menu doesn't load properly​

A temporary issue, usually fixed within seconds.

Only 'Help' is displayed in the add-on menu​

Only help menu

Refresh the spreadsheet and try again.

The 'Open tracking report' button doesn't appear​

You see Configure form submission notifications instead, because YAMM isn't activated in that spreadsheet.

Configure form submission notifications shown instead of Start Mail Merge

Click Add-ons > Manage add-ons > click Manage next to YAMM > Use in this document.

Use in this document

Refresh the spreadsheet — Open tracking report appears.

Open tracking report

The 'Add-ons' menu doesn't appear on my spreadsheet​

If the Add-ons menu is missing, you're probably looking at an Excel file (green .XLSX indicator at the top).

Green XLSX indicator marking an Excel file rather than a Google Sheet

Open a new Google Spreadsheet (File > New > Spreadsheet), then File > Import the Excel data into the new spreadsheet.

Import spreadsheet
Excel data imported into a new Google spreadsheet with File and Import

The Add-ons menu now appears.

Add-ons menu visible

Only a Help button appears in the add-on menu​

When you open a spreadsheet, wait around 5 seconds for the document to fully load before using the add-on — otherwise you only see a Help button.

Refresh the page a few times until the full menu appears.