int imap_check_mailbox (CONTEXT * ctx, int *index_hint, int force);
int imap_delete_mailbox (CONTEXT * idata, IMAP_MBOX mx);
int imap_open_mailbox_append (CONTEXT * ctx);
int imap_check_mailbox (CONTEXT * ctx, int *index_hint, int force);
int imap_delete_mailbox (CONTEXT * idata, IMAP_MBOX mx);
int imap_open_mailbox_append (CONTEXT * ctx);