Electronic mail systems Electronic mail messages 4 Language 3 Business communication 2 Communication in organizations 2 Information technology 2 Moral and ethical aspects 2 Online social networks 2 Politeness (Linguistics) 2 Security measures 2 Speech acts (Linguistics) 2 Automation 1 Commercial correspondence 1 Communication 1 Computer programs 1 Corporations 1 Data integration (Computer science) 1 Data logging 1 Discourse analysis, Literary 1 English language 1 Gender-based analysis 1 Internet users 1 Interpersonal relations 1 Management 1 Microblogs 1 Neural networks (Computer science) 1 Pragmatics 1 Public key infrastructure (Computer security) 1 Querying (Computer science) 1 Sex differences 1