ESP
An ESP, or email service provider, which is a company that provides email marketing services to businesses and organizations.
An ESP typically offers a range of tools and features, such as email design templates, list management, automation, and reporting, to help businesses create and send effective email campaigns.
ESPs can also provide insights into email engagement and performance metrics, which can be used to improve future campaigns. Examples of popular ESPs include Active Campaign, Send in Blue, and MailerLite.