Link & Image Infrastructure (CDNs, Trackers)

The "other" domains that affect your reputation. The domains you use for tracking links and hosting images also have reputations. This section explains why they must be aligned with your sending domain to build trust.

21 questions in this topic

Why use a custom domain for tracking links? How does click tracking work? How does link tracking domain reputation affect deliverability? What are redirect domains? What is link wrapping? How do ESPs count unique vs total clicks? What is pixel tracking for opens? How does MPP (Mail Privacy Protection) affect tracking? What are custom tracking domains and why use them? What are privacy implications of tracking? What are the risks of third-party link shorteners? How do anti-phishing filters inspect links? What are “safe link” rewriting systems (Microsoft ATP, Gmail Safe Browsing)? How can link patterns hurt deliverability? How can you disable link tracking selectively? What’s the difference between click tracking and engagement scoring? Should my link domain match my sending domain? Where should I host images for emails? What is a Content Delivery Network (CDN)? How do CDNs help with email image loading? How does Gmail's image proxy work?

Questions about Link & Image Infrastructure (CDNs, Trackers)