Sallie Mae customer service representatives are available by phone at 800-472-5543 from 8 a.m. to 9 p.m. Eastern Time Monday through Thursday and 8 a.m. to 8 p.m. Eastern Time on Friday , according to Sallie Mae. The company accepts mailed correspondence at P.O. Box 3319, Wilmington, DE 19804-4319.
Sallie Mae customer service is closed on major holidays, but customers can access their accounts through the automated phone system or online at SallieMae.com 24 hours a day, seven days a week, explains Sallie Mae. By visiting SallieMae.com, customers can also find answers to frequently asked questions, complete a loan application, check the status of a current application, or learn more about scholarships, grants and other forms of financial aid.