
How to Do a Mail Merge in Word
Send personalized letters or emails from one document. This mail merge guide covers the Mailings tab wizard, an Excel list, merge fields, and formatting fixes.
Daniel spent five years as an IT support specialist, walking colleagues through Windows, Office, printers and file problems before moving into tech writing. He covers the desktop side of 9sBlog: Windows 10 and 11, Microsoft Office, PDFs and the everyday software fixes that used to land on his support desk.
121 articles

Send personalized letters or emails from one document. This mail merge guide covers the Mailings tab wizard, an Excel list, merge fields, and formatting fixes.

If the Windows 11 taskbar is frozen, missing, or ignoring clicks, restart Explorer first, then re-register the shell and check for updates. Full steps here.

Windows 11 stuck at 100% disk usage? Find the process in Task Manager, then calm SysMain, Windows Search, and the few known culprits to get speed back.

A black screen on Windows 11 comes in two forms: before sign-in and after. Here is how to wake the display, restart Explorer, and boot Safe Mode to fix it.

Excel now has a real cell checkbox that returns TRUE or FALSE. Here is how to add it in Microsoft 365, plus the classic Developer method for older versions.

An email stuck in the Outlook Outbox usually means offline mode, a big attachment, or an open message. Here is how to clear it in classic and new Outlook.

Samsung Galaxy storage full? Empty the Gallery and My Files trash, clear app cache, and offload photos to Google Photos to reclaim gigabytes.

Windows 11 freezing? Update drivers, test your RAM, and repair system files with built-in tools. A step-by-step fix for random freezes.

Your Android phone keeps losing signal? Toggle Airplane mode, reseat the SIM, lock to LTE, and reset network settings — the fixes that actually work.

Clear cookies in Firefox for one site or all sites using the address-bar lock icon or Privacy & Security settings, on desktop or Android.