Matomo Utm Parameter Review

Do not add UTMs to internal navigation links (e.g., from /blog to /product ). This will reset campaign attribution. Reserve UTMs for traffic sources.

Matomo automatically concatenates utm_source and utm_medium into a single sourceMedium dimension (e.g., google / cpc ). This is visible in the report under “Campaigns.” matomo utm parameter

utm_campaign=black_friday (email) vs utm_campaign=black_friday (Facebook). Fix: Add utm_content or include medium in campaign name: email_black_friday . Do not add UTMs to internal navigation links (e

If a parameter contains spaces, ampersands, or symbols, URL-encode them: matomo utm parameter

https://example.com/?pk_campaign=newsletter&pk_campaignTimeout=86400

(Timeout in seconds — 86400 = 24 hours)