An email service provider (ESP) is a company offering email marketing or bulk email services.

An ESP will provide services which may include the following features:

• Ability to create templates or use of pre-made templates
• A subscriber list which is uploaded by the user
• A send engine
• Updating of the subscriber list
• Statistical reviews
• Testing templates for compatibility with email applications
• Spam testing to gauge the score of the mailing
• The ability to send both the html and plain text formats
• The ability to customize dynamically the content of emails

— Pia Bihlmaier 2013/05/05 20:47