It is a freeware email client softwar by Bone Software which is now available for MAC OS X only. The software was released a long time before and it is very easy to use. It has a advanced search options like grep pattern mathcing and fuzzy searching. With this tool you can compose your email and get more functions in it. It is quiet similar to BBEdit and also includes the plug ins for the same. Mailsmith gives filtering, automation and text manupulation of different e-mail messages which comes in your inbox daily, by using POP/SMTP protocols.