Email Sending 101: IP Reputation vs. Domain Reputation | SendGrid

IP Reputation:

• Focused on the Source: IP reputation is tied to the specific IP address from which emails are sent. It’s a measure of the trustworthiness of emails originating from that IP.
• Influenced by Volume and Behavior: High volumes of email, especially if they trigger spam complaints or are marked as junk, can negatively impact IP reputation. Consistently good practices, however, enhance it.
• Shared vs. Dedicated Impact: On a shared IP, your reputation can be influenced by the actions of others using the same IP. With a dedicated IP, you have full control over the reputation tied to that address.

Domain Reputation:

• Focused on the Brand: Domain reputation is linked to your sending domain (your brand"s URL). It reflects the credibility of emails associated with your domain.
• Relates to Content and Engagement: This reputation is influenced more by the quality of the content, engagement rates, and how recipients interact with your emails (like open rates and forwarding).
• Long-term and Portable: Domain reputation builds over a longer period and is not tied to a specific IP address, making it portable if you change email service providers.

Key Differences:

1. Scope of Impact: IP reputation is about the sending address"s behavior, while domain reputation is about the brand’s overall email practices.
2. Control: You have more control over your IP reputation, especially with a dedicated IP. Domain reputation, however, is influenced by factors beyond just sending practices, like recipient interaction.
3. Longevity and Portability: Domain reputation is more enduring and follows your domain regardless of IP changes, while IP reputation is specific to an individual IP address and needs to be built up when the IP changes.

following the above rules, customer delivery reputation may still get affected, since they will be using our shared IP and the reputation of it