v3.9.4

3.9.4 (2026-03-09)

Bug Fixes

• bump nodemailer to 8.0.2 for unquoted comma-in-display-name parsing (dd71f08)
• filter false values from empty References headers (9884e5d), closes #385
• prevent RFC 2047 encoded-word address fabrication in decodeAddresses (08b800c)