Opinions expressed by Entrepreneur contributors are their own. By 2025, more than 4.5 billion people worldwide will have at least one email address. Email is a profitable marketing channel because it ...

In love and in marketing, you have to learn to admit when a relationship isn't working—especially when the email subscribers you're attempting to woo are hurting your performance numbers. Email is a ...

At least 28% of your email list could have gone bad over the past year. Do these simple things to clean it up and stop sending emails into a void. If you worry that your database may be hurting your ...

An Excel email address list should contain nothing but the addresses themselves. Yet if the spreadsheet received its data from an external form, the column may contain irrelevant text. One cell may ...