Any potential customer is considered to be a Lead. A lead can come from any source, like website, advertisement, cold call, customer, supplier, employee referral, etc..
Once a lead is converted into a customer various actions of ServiceFolder like creating quotations, jobs, sales-invoices can be done.
The ServiceFolder application provides you with the best way to keep track of the lead with the tasks and events and in easy conversion of them to customers with their mailing service.