Email Service Provider: What It Is, Key Features, Benefits, Use Cases, and How It Fits in Email Marketing
An **Email Service Provider** is the platform and infrastructure that businesses use to send, manage, and measure email at scale—everything from newsletters to lifecycle automation to transactional messages. In **Direct & Retention Marketing**, it’s a core system because email remains one of the most controllable channels for reaching customers repeatedly, building loyalty, and driving predictable revenue.