new file mode 100644
--- /dev/null
+++ b/src/imap/ngx_imap.h
@@ -0,0 +1,32 @@
+#ifndef _NGX_IMAP_H_INCLUDED_
+#define _NGX_IMAP_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+typedef struct {
+    ngx_chain_t  *send;
+} ngx_imap_request_t;
+
+
+#define NGX_POP3_USER    1
+#define NGX_POP3_PASS    2
+#define NGX_POP3_APOP    3
+#define NGX_POP3_STAT    4
+#define NGX_POP3_LIST    5
+#define NGX_POP3_RETR    6
+#define NGX_POP3_DELE    7
+#define NGX_POP3_NOOP    8
+#define NGX_POP3_RSET    9
+#define NGX_POP3_TOP     10
+#define NGX_POP3_UIDL    11
+#define NGX_POP3_QUIT    12
+
+
+void ngx_imap_init_connection(ngx_connection_t *c);
+void ngx_imap_close_connection(ngx_connection_t *c);
+
+
+#endif /* _NGX_IMAP_H_INCLUDED_ */