#include <libmail/sync.H> mail::ACCOUNT *mail;
mail::ACCOUNT::getFolderIndexSize returns the number of messages in the currently open folder. Messages in the folder are numbered starting with zero, and ending with one less than the number returned by this function.
For example, if mail::ACCOUNT::getFolderIndexSize returns 5 it means that there are five messages in the folder, numbered 0 through 4.
Return Codes and Callbacks
This function always succeeds, and returns the number of messages in the currently-open folder.