 |
| English | Thesaurus |
| Digital Electronic Message Services | DEMS (Vosoni) |
| Electronic Access to Reference Services | EARS |
| Electronic Commerce Services | ECS (secure data transmission) |
| Electronic Courier Services secure data transmission March 2000 | ECS |
| Electronic Mail Services | EMS |
| Electronic Platform of Public Administration Services | ePUAP (Электронный портал государственных услуг Польши (bit.ly/2wN7eAq) 4uzhoj) |
| United States Postal Service Electronic Courier Services secure data transmission March 2000 | Post ECS |