Mail Abbreviations and Acronyms
- SMGSymantec Messagwng Gateway
- SNARFSocial Network and Relationship Finder
- SNDSSmart Network Data Services
- SNDSSmart Network Data Service
- SNSSaturday Night Special
- SOGStar Outsourcing Group
- SONGSouthern Ontario Newspaper Guild
- SPServer Provider
- SPSigning Practices
- SPEWSSpam Prevention Early Warning System
- SPISwiss Post International
- SPLSecurity Policy Language
- SRCSpam Recycling Center
- SRDSender Reputation Data
- SRHSuperintendêNcia De Recursos Humanos
- SSCESentry Spelling-Checker Engine
- SSPFSam Schmidt Paralysis Foundation
- SUESportello Unico Edilizia
- SWLSpamhaus White List
- TAGTelecommunications Action Group
Last updated: — Total entries: 543