As a mail order pharmacist, you manage the sales of medication through a company's online store or another remote ordering system. You verify the accuracy of prescription orders, speak with customers over the phone to discuss dosage and potential drug interactions, and clarify orders with healthcare providers. Mail order pharmacies can be closed door (in which they only send a dose of medication through the mail), or they can be open door (in which the pharmacy offers walk-in services). Like a regular pharmacist, you may determine when it is appropriate to change the drug prescribed, proactively contact patients to ask about symptoms and refill the medicine to ship it at a time that ensures no interruptions in the patient's supply.