Account holders can pay ExxonMobil credit card bills online through CitiCard.com's ExxonMobil payment page or by mailing a check or money order to the billing address listed on CitiCard.com's ExxonMobil help page. The online payment option requires registration for online account services.
USPS Priority Mail can deliver customer payments within two to three business days. Western Union can deliver a money transfer to ExxonMobil's offices immediately via agent, often the same business day, or an express delivery service such as those offered by FedEx, DHL, USPS or UPS may be used to send payments via overnight service. ExxonMobil does not offer an option to pay bills by telephone.