Overseas Email Directory (海外邮箱大全) is an online marketplace for international email accounts and related API services. Its catalog includes personal and business Google accounts, iCloud accounts, Microsoft accounts, email services associated with various countries and domains, and Google Voice products. Listings range from short-term accounts to older accounts described as long-term, with some offering two-step verification or account details tied to particular regions. Product pages provide delivery formats, applicable-use information, inventory, pricing, and, where offered, brief first-login warranties.

The platform emphasizes automated digital delivery, with real-time stock information, online payment, order lookup, and customer support. Buyers can also access an open API for product and order operations, balance deductions, and real-time notifications; the site says it supports standard HTTP integration as well as connections through named ecommerce systems. Orders may be created and tracked through the API or website. Overseas Email Directory describes its service as a stable, transparent, and efficient digital-product delivery platform, and asks customers to use purchased products and services lawfully and in compliance with applicable rules.