Lead Sources
Lead sources show how new leads find your company. If you use the Marketing Automation feature, the list of possible lead sources matches the titles of your marketing campaigns. For more information, see Campaign Overview.
If you don't use Marketing Automation, you can create new lead sources at Setup > Sales > Setup Tasks > CRM Lists > New.
Lead source is set in the Lead Source field on lead, prospect, customer, and contact records.
If you create a campaign email message with a link to an online lead capture form, pass the lead source in the URL. When you pass the lead source in the URL, the new lead is properly attributed to the lead source. For more information, see Passing Parameters Through URLs.
If you import a list of leads through smbXML or CSV, you can include the lead source in the file. This helps you track where these leads came from.
For letter campaigns and other campaign channels, you can manually track which campaign brought a customer to your company. To manually track the campaign, select the lead source on the customer record.