diff --git a/test/fixtures/mail_handler/fullname_of_sender_in_parentheses.eml b/test/fixtures/mail_handler/fullname_of_sender_in_parentheses.eml
new file mode 100644
index 000000000..b281bec79
--- /dev/null
+++ b/test/fixtures/mail_handler/fullname_of_sender_in_parentheses.eml
@@ -0,0 +1,8 @@
+Return-Path: <jdoe@example.net>
+From: jdoe@example.net (John Doe)
+To: <redmine@example.net>
+Subject: Name in parentheses
+Date: Sun, 03 Mar 2019 21:23:00 +0900
+Content-Type: text/plain; charset="utf-8"
+
+The author's full name is enclosed in parentheses.
\ No newline at end of file