Ruby API
v3.0
3.4
3.3
3.2
3.1
3.0
2.7
2.6
2.5
2.4
2.3
dev
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System
Ruby API
v3.0
3.4
3.3
3.2
3.1
3.0
2.7
2.6
2.5
2.4
2.3
dev
Light
Dark
System
Parent
ProtocolError
Included Modules
SMTPError
Type Signatures
Preview
Show type signatures generated automatically by
RBS
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Enable Type Signatures
Parent
ProtocolError
Included Modules
SMTPError
Net::SMTPUnsupportedCommand
Class
Command is not supported on server.