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Use cases

See also this page on russian.

• Occasional connection to mail server  
• Lightweight fast POP3/IMAP4 replacement  
• Unreliable/expensive communication link  
• Slow/expensive link for high-volume data, bad QoS  
• Extreme terrestrial environments, no link  
• One-way broadcasting communications  
• Satellite links  
• Private, isolated MitM/Sybil-resistant networks  
• Highly secure isolated air-gap computers  
• Network censorship bypassing, health  
• Reconnaissance, spying, intelligence, covert agents  
• Cheap night transfers