Enter here your encrypted and unique license key from Melissa Data. This is necessary for including with each request to the web service. If you do not have a license key, please contact your Melissa Data sales representative at 1-800-MELISSA (1-800-635-4772)

• Verify Mailbox - Select either Express or Premium. Express is the default; it quickly validates against a database of known email addresses. Premium performs real time, live validation of email addresses
• Domain Correction - Determines whether fuzzy correction will be used on suspected email domain typos
• Time To Wait - Select how long (in seconds) you would like our web service to wait on a single email before it times out. Range is 5 - 25 seconds