I would like to import/insert data into one of the custom fields depending upon the domain of the email address
To be specific,
- At the moment in the list there are email addresses ending in .com.au but the country field is blank. I would like to insert "Australia" into the this field.
There are about 1000 adresses ( i dont want to do this one by one through the browser).
What is the best way to do this ?