Documents

Manuals

• The manual included in Sylpheed (for 1.0.x, English)
• The FAQ included in Sylpheed (for 2.7, English)
• FAQ (other languages)

Wiki

• Sylpheed Wiki (Japanese)

Developer's documents

• Sylpheed plug-in specification
• LibSylph 1.0.0 reference manual (Japanese only)
• LibSylph 1.0.0 sample code

License document

• License document