diff -ur imap-2007f.orig/src/c-client/mail.c imap-2007f/src/c-client/mail.c
--- imap-2007f.orig/src/c-client/mail.c 2011-07-23 03:20:18.000000000 +0300
+++ imap-2007f/src/c-client/mail.c      2012-07-11 13:28:29.000000000 +0300
@@ -3251,6 +3265,10 @@
 {
   unsigned long i,j,k,x,y;
   for (i = 1; i <= stream->nmsgs; i++) mail_elt (stream,i)->sequence = NIL;
+  
+  //MR: this issues sequence lookup mseq and fills cache
+  imap_msgnos (stream, sequence);
+
   while (sequence && *sequence){/* while there is something to parse */
     if (*sequence == '*') {    /* maximum message */
       i = stream->nmsgs ? mail_uid (stream,stream->nmsgs) : stream->uid_last;
diff -ur imap-2007f.orig/src/c-client/mail.h imap-2007f/src/c-client/mail.h
--- imap-2007f.orig/src/c-client/mail.h 2011-07-23 03:20:18.000000000 +0300
+++ imap-2007f/src/c-client/mail.h      2012-07-11 13:26:16.000000000 +0300
@@ -1476,6 +1476,8 @@
   unsigned long (*uid) (MAILSTREAM *stream,unsigned long msgno);
                                /* return message number from UID */
   unsigned long (*msgno) (MAILSTREAM *stream,unsigned long uid);
+                               /* fill cache from UID list */
+  void (*msgnos) (MAILSTREAM *stream, unsigned char *sequence);
                                /* modify flags */
   void (*flag) (MAILSTREAM *stream,char *sequence,char *flag,long flags);
                                /* per-message modify flags */
--- imap-2007f.orig/src/c-client/imap4r1.c      2011-07-23 03:20:18.000000000 +0300
+++ imap-2007f/src/c-client/imap4r1.c   2012-07-23 16:57:09.000000000 +0300
@@ -180,6 +180,7 @@
                   long flags);
 unsigned long imap_uid (MAILSTREAM *stream,unsigned long msgno);
 unsigned long imap_msgno (MAILSTREAM *stream,unsigned long uid);
+void imap_msgnos (MAILSTREAM *stream, unsigned char *uids);
 void imap_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
 long imap_search (MAILSTREAM *stream,char *charset,SEARCHPGM *pgm,long flags);
 unsigned long *imap_sort (MAILSTREAM *stream,char *charset,SEARCHPGM *spg,
@@ -294,6 +295,7 @@
   imap_msgdata,                        /* fetch partial message */
   imap_uid,                    /* unique identifier */
   imap_msgno,                  /* message number */
+  imap_msgnos,                 /* message numbers */
   imap_flag,                   /* modify flags */
   NIL,                         /* per-message modify flags */
   imap_search,                 /* search for message based on criteria */
@@ -1947,6 +1949,48 @@
   }
   return 0;                    /* didn't find the UID anywhere */
 }
+
+/*
+* MR, this is dummy function just to fill cache
+* does not care what it returns, if result is good, then cache will be filled
+* uids delimiter is ','
+*/
+void imap_msgnos (MAILSTREAM *stream, unsigned char *uids)
+{
+  IMAPPARSEDREPLY *reply;
+  IMAPARG *args[3],aseq,aatt;
+  char seq[MAILTMPLEN];
+  char *p, *dp;
+  int i,j;
+
+  aseq.type = SEQUENCE; aseq.text = (void *) seq;
+  aatt.type = ATOM; aatt.text = (void *) "UID";
+  args[0] = &aseq; args[1] = &aatt; args[2] = NIL;
+
+  p = uids; // pointer to move
+  dp = uids; // pointer to latest delimiter fit in buffer
+
+  /* loop until end */
+  while (*p) {
+    for ( i = 0; i < MAILTMPLEN; i++) {
+      seq[i] = *p;
+      if ( seq[i] == ',') { dp = p; j = i; }
+      if ( seq[i] == '\0' ) { 
+        if (!imap_OK (stream,reply = imap_send (stream,"UID FETCH",args))) mm_log (reply->text,ERROR);
+        return;
+      }
+      p++;
+    }
+
+    seq[j] = '\0';
+    p = dp+1;
+
+    /* send "UID FETCH uid UID" */
+    if (!imap_OK (stream,reply = imap_send (stream,"UID FETCH",args))) mm_log (reply->text,ERROR);
+  }
+
+}
+
 

 /* IMAP modify flags
  * Accepts: MAIL stream