Binary package “libopensmtpd-dev” in ubuntu oracular

development files for libopensmtpd

 This library provides an event-based interface for writing
 OpenSMTPD filters. It is used, for example, by the dkimsign filter
 provided by the filter-dkimsign package.
 .
 This package provides C header files. Non-developers likely have
 little use for this package.