Advertising, promotion and marketing services in the nature of sending, on behalf of others, email blasts, email messages, email communications, and email advertisements to customers and potential customers, for advertising, promotional, marketing, and sales purposes; maintaining a database of email addresses for use in sending, on behalf of others, email blasts, email messages, email communications, and email advertisements to customers and potential customers, for advertising, promotional, marketing, and sales purposes; maintaining a database of email addresses and collecting email addresses, and appending such email addresses to others' electronic files and electronic lists of customers and potential customers for advertising, promotional, marketing, and sales purposes