Email marketing campaigns are strategic efforts to communicate with customers and potential clients through email. Businesses use these campaigns to promote products, share news, or provide valuable content, aiming to engage their audience and drive sales. These campaigns often involve creating a targeted list of recipients, designing appealing email content, and analyzing the results to improve future efforts. Tools like Mailchimp or Constant Contact help businesses manage their campaigns, track open rates, and measure success, making it easier to connect with their audience effectively.