UTM parameters tag links so analytics tools can attribute visits and conversions to specific email campaigns. Learn how UTMs work and naming best practices.
UTM parameters are tags added to URLs to help analytics platforms attribute traffic to a source, medium, and campaign. In email marketing, UTMs help you measure which emails and links drive visits, signups, and purchases.
Common fields include utm_source, utm_medium, and utm_campaign. Consistent naming matters because inconsistent UTMs fragment reporting and make results harder to compare over time.
A simple best practice is to standardize source and medium for email (for example, source=newsletter, medium=email) and use campaign names that are human-readable. Keep UTMs consistent across teams so reporting stays clean.