E-mail Strategy: Effective Ways to Select an E-Mail Marketing Vendor

4. Dig deeper on references. Skip over the vendor’s marquis-name references and ask for names of companies that aren’t called as often. Don’t just talk to companies that are in your field. Rather, seek companies with an e-mail volume, level or type of service similar to yours. Try to speak with one client who has worked with the vendor two or more years, one who has been a client six to 12 months and one who has worked with the firm less than six months.