Revenue Attribution

Automatically append Google Analytics UTM parameters to all links in emails during rendering. Parameters: utm_source=pushmail, utm_medium=email, utm_campaign={campaign_or_sequence_name}, utm_content={step_or_variant}. Implementation is lightweight — piggyback on the existing link rewriting pass in rewriteLinksForTracking(). UTM tags let teams track email-driven conversions and revenue attribution through Google Analytics without any new PushMail infrastructure. Optional per-campaign/sequence toggle and custom UTM overrides. A future phase could add a conversion webhook or tracking pixel to pull attribution data back into PushMail dashboards.