Whether you run a WordPress community with 1,000 members or a WooCommerce store with 100,000 orders, sometimes for testing you want to change all the account emails to something like “test@test.com”

After all, you don’t want to accidentally send a test email to all those users!

How to Change All WordPress User Emails to test@test.com

Run the following SQL query on the database for recent versions of phpMyAdmin:

UPDATE `wp_users` SET `user_email`='test@test.com'

Run the following SQL query on the database for earlier versions of phpMyAdmin:

UPDATE wp_users SET user_email='test@test.com'

This will set all WordPress users’ email addresses to “test@test.com”.

How To Update All WooCommerce Order Email Addresses to test@test.com

If you are using WooCommerce, do the above and THEN do this for newer versions of phpMyAdmin:

UPDATE `wp_usermeta` SET `meta_value` = 'test@test.com' WHERE `meta_key` = 'billing_email'

If you are using WooCommerce, do the above and THEN do this for older versions of phpMyAdmin:

UPDATE wp_usermeta SET meta_value = 'test@mailinator.com' WHERE meta_key = 'billing_email'

Pretty nifty, eh?