When does using a dedicated IP address solve sending issues?

A dedicated IP address helps resolve email sending issues primarily when the goal is to gain greater control and responsibility over sender reputation. This is particularly useful when migrating from a shared IP, wanting a clean sending reputation, or needing to implement specific authentication protocols like DKIM and SPF. High-volume senders (often cited as over 50,000 emails per month) benefit most because they can establish and maintain a positive IP reputation. While Google tracks reputation at lower volumes and emphasizes domain reputation, sufficient volume is still important. However, a dedicated IP requires a proper IP warming strategy and consistent adherence to email best practices. It won't solve underlying problems with list hygiene or email content and can even harm deliverability if sending practices are poor or volume is too low to establish a good reputation.

Using a dedicated IP address can resolve email sending issues primarily related to sender reputation. It provides control over your reputation, independent from other senders on shared IPs. This is beneficial for high-volume senders (e.g., over 50,000 emails per month) who consistently follow email best practices. However, a dedicated IP requires a warm-up period to establish a positive reputation, and it won't solve problems stemming from poor list hygiene or content issues. Low-volume senders may not see significant benefits from a dedicated IP.

Using a dedicated IP primarily helps when you want to establish clear responsibility for delivery issues and control over your sender reputation. It forces senders to address their own problems. While high volume is beneficial for maintaining a good IP reputation, Google tracks and assigns reputation even at lower volumes (around 5000 per day), and increasingly considers domain reputation. However, if you don't have sufficient volume or fail to follow best practices, a dedicated IP might not improve or could even harm deliverability.

A dedicated IP address resolves email sending issues when a clean sending reputation is needed, such as when migrating from a shared IP address or wanting to isolate your reputation. It enables control over your sender reputation and allows implementation of custom authentication protocols like DKIM and SPF. However, it's crucial to implement a proper IP warming strategy, as you become solely responsible for managing and maintaining that reputation.