leadSendableLogic.js

private static Boolean sendable(Lead newLead, Set<Id> scheduledLeadIds) {
Boolean isTestRecord = newLead.Email != null ? newLead.Email.contains('+ostest') : false;

if((newLead.Email != null ||
  Utilities.hasPhysicalAddress(newLead.Street, newLead.City, newLead.State, newLead.PostalCode)) &&
  (newLead.CreatedDate >= Datetime.now().AddYears(-3) ||
  scheduledLeadIds.contains(newLead.Id)) &&
  !isTestRecord &&
  newLead.Inbound_Call__c != Constants.NonSalesCall &&
  newLead.Inbound_Call__c != null &&
  newLead.ConvertedDate == null) {
    return true;
  }
return false;
}