axuno 

A string composition library written in C# that can format data into a string with a minimal, intuitive syntax. It uses extensions to provide named placeholders, pluralization, gender conjugation, and time and list formatting. Project hosted on GitHub https://github.com/axuno/SmartFormat

MailMergeLib is a mail message client library which provides comfortable mail merge capabilities for text, inline images and attachments, as well as good throughput and fault tolerance for sending mail messages.