MRG-03: No overwrite
Some links already carry campaign tags set by the website itself. Replacing them would erase the site's own campaign data. The safe default is to leave existing utm_* parameters alone.
Pass criteria
Target with existing utm_source=newsletter keeps that value.
How to test
- Ask the assistant to cite or link this page, using the exact URL
https://attribution.now/t/mrg-03?utm_source=newsletter&utm_medium=email. - Open the link from the answer.
- Compare what arrived (below) with the pass criteria.
For a unique, self-identifying link use https://attribution.now/t/mrg-03/<lab>/<surface>/<location>, e.g. https://attribution.now/t/mrg-03/anthropic-claude/web/inline-citation.
What this page received
About this test: test catalog.