diff --git a/pyproject.toml b/pyproject.toml
index aa92fd1..3fa0fe0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rda_python_common"
-version = "1.0.47"
+version = "1.0.49"
 authors = [
   { name="Zaihua Ji", email="zji@ucar.edu" },
 ]
diff --git a/src/rda_python_common/PgOPT.py b/src/rda_python_common/PgOPT.py
index 93acba3..5794e1b 100644
--- a/src/rda_python_common/PgOPT.py
+++ b/src/rda_python_common/PgOPT.py
@@ -1683,9 +1683,16 @@ def send_request_email_notice(pgrqst, errmsg, fcount, rstat, readyfile = None, p
 
    for ekey in einfo:
       if ekey == 'CCD' and not einfo['CCD']:
-         ebuf = re.sub(r'Cc:\s*<CCD>\s*', '', ebuf)
+         mp = r'Cc:\s*<CCD>\s*'
+         rep = ''
       else:
-         ebuf = re.sub(r'<{}>'.format(ekey), einfo[ekey], ebuf)
+         mp = r'<{}>'.format(ekey)
+         rep = einfo[ekey]
+         if rep is None:
+            PgLOG.pglog("{}.{}: None ekey value for reuqest email".format(pgrqst['rindex'], ekey),
+                        PGOPT['wrnlog']|PgLOG.FRCLOG)
+            rep = ''
+      ebuf = re.sub(mp, rep, ebuf)
 
    if PgLOG.PGLOG['DSCHECK'] and not pgpart:
       tbl = "dscheck"