UTM parameters
UTM parameters are labels added to the end of a link (utm_source, utm_campaign and others) that show where a visitor came from.
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Explanation
A newsletter link might be ...?utm_source=newsletter&utm_campaign=october. Analytics tools and the CRM use it to tie the visit to the campaign.
Without consistent naming UTM data soon becomes useless: decide in advance what goes in source and campaign.
How HelloTeam does it
HelloTeam forms store the UTM parameters and referral code a visitor arrived with as the contact's first touch.
Module: Forms (€4.90 / month).