Whatever is easiest.
To perform the research, we need your client's contact information, including email addresses. We recommend contact exports from Gmail or Outlook. If that doesn't work for you, a simple .csv or .txt file with a single email address per line is perfectly fine. As long as the data is electronic, we will happily perform the research for you. Got it? Let's get started. Still confused? Drop us a line.
Export Contacts from Gmail
Export Contacts from Outlook
Export Contacts from Hotmail
Export Contacts from Yahoo Mail