After uploading your database, Smokingtoad will perform a first run validation on your list. This involves taking out all the duplicate email address and contacts, and ensuring that your list only contains contacts with correctly formatted email address. As you perform your broadcasts, your contacts list will become cleaner, giving you a more representative view of the contacts that you hold. 

Smokingtoad can also conduct a large number of other de-duplication and validations services, both on and off line. For more information please contact Smoking Toad.