c++ - I want to design E-mail client design -

i want design email client , environment in c++ languagewhich can provide similar facilities gmail client has. can tell me things need read , follow? or help?

read lot of books , web pages smtp, imap, email clients, mta. consider using qt , libraries vmime

study source code of several free software email clients mutt, evolution, kmail....

be familiar linux, read advanced linux programming.

you might need several years of work.