Should a contractor try to contact a customer after a proposal has been submitted?

Yes, a contractor should consider contacting a customer after submitting a proposal. Following up demonstrates professionalism and can help clarify any questions the customer might have, as well as reinforce the contractor's interest in the project. It also provides an opportunity to address any concerns and potentially strengthen the relationship, increasing the likelihood of securing the job. However, it's important to strike a balance and not come across as overly pushy.