A feedback loop in email marketing is a mechanism that allows email senders to receive notifications or feedback from email service providers (ESPs) or internet service providers (ISPs) about how recipients interact with their emails.
When a recipient interacts with an email (e.g., opens the email, clicks on a link, marks it as spam, or unsubscribes), the recipient’s email client or ISP records this interaction.
The recipient’s email client or ISP sends feedback reports to the email sender’s designated feedback loop email address. These reports contain information about the recipient’s actions, such as opens, clicks, spam complaints, or unsubscribes.
The email sender receives the feedback reports and processes the information contained within them. This may involve analyzing the data to identify trends, patterns, or issues affecting deliverability and reputation.
Email senders typically set up feedback loops with major ISPs and ESPs to receive feedback reports automatically. This involves registering their sending domains and IP addresses with the respective feedback loop programs offered by ISPs and ESPs.