diff --git a/src/main/org/apache/tools/ant/taskdefs/email/MimeMailer.java b/src/main/org/apache/tools/ant/taskdefs/email/MimeMailer.java
index 54514b9843..6a55312d3a 100644
--- a/src/main/org/apache/tools/ant/taskdefs/email/MimeMailer.java
+++ b/src/main/org/apache/tools/ant/taskdefs/email/MimeMailer.java
@@ -280,6 +280,10 @@ private static InternetAddress[] internetAddresses(final Vector<EmailAddress> li
         final List<InternetAddress> addrs = new ArrayList<>();
 
         for (final EmailAddress addr : list) {
+            if (addr.getAddress().isEmpty()) {
+                // skip
+                continue;
+            }
             final String name = addr.getName();
             addrs.add((name == null)
                 ? new InternetAddress(addr.getAddress())