diff --git a/mail/opensmtpd-filters/Makefile b/mail/opensmtpd-filters/Makefile
index da2c82fc67d..ce223e0013e 100644
--- a/mail/opensmtpd-filters/Makefile
+++ b/mail/opensmtpd-filters/Makefile
@@ -3,6 +3,7 @@ SUBDIR += admdscrub
 SUBDIR += dkimsign
 SUBDIR += dnsbl
 SUBDIR += libopensmtpd
+SUBDIR += mimedefang
 SUBDIR += rspamd
 SUBDIR += senderscore
 SUBDIR += spamassassin
diff --git a/mail/opensmtpd-filters/mimedefang/Makefile b/mail/opensmtpd-filters/mimedefang/Makefile
new file mode 100644
index 00000000000..5b37fadef78
--- /dev/null
+++ b/mail/opensmtpd-filters/mimedefang/Makefile
@@ -0,0 +1,26 @@
+COMMENT=	MIMEDefang integration to the OpenSMTPD daemon
+
+V=		0.1
+FILTER_NAME =	mimedefang
+DISTNAME =	${FILTER_NAME}-smtpd-filter-${V}
+PKGNAME =	filter-${FILTER_NAME}-${V}
+
+CATEGORIES=	mail
+HOMEPAGE=	https://mimedefang.org
+
+MAINTAINER=	Giovanni Bechis <gbechis@openbsd.org>
+
+MASTER_SITES=   ${HOMEPAGE}/releases/opensmtpd/
+INSTALL_TARGET=	build install
+
+WRKDIST=	${WRKDIR}/${PKGNAME}
+
+RUN_DEPENDS=	mail/mimedefang \
+		mail/p5-OpenSMTPd-Filter
+
+# MIT
+PERMIT_PACKAGE=	Yes
+
+NO_TEST=	Yes
+
+.include <bsd.port.mk>
diff --git a/mail/opensmtpd-filters/mimedefang/distinfo b/mail/opensmtpd-filters/mimedefang/distinfo
new file mode 100644
index 00000000000..d07887bd008
--- /dev/null
+++ b/mail/opensmtpd-filters/mimedefang/distinfo
@@ -0,0 +1,2 @@
+SHA256 (mimedefang-smtpd-filter-0.1.tar.gz) = UXZlyxDojrEJzZGbA9qQLnHAQTcOFENGB8Rc9GZaBxU=
+SIZE (mimedefang-smtpd-filter-0.1.tar.gz) = 6825
diff --git a/mail/opensmtpd-filters/mimedefang/pkg/DESCR b/mail/opensmtpd-filters/mimedefang/pkg/DESCR
new file mode 100644
index 00000000000..04cd030bf80
--- /dev/null
+++ b/mail/opensmtpd-filters/mimedefang/pkg/DESCR
@@ -0,0 +1 @@
+filter-mimedefang is an opensmtpd filter that integrates MIMEDefang with OpenSMTPD.
diff --git a/mail/opensmtpd-filters/mimedefang/pkg/PLIST b/mail/opensmtpd-filters/mimedefang/pkg/PLIST
new file mode 100644
index 00000000000..7d6f430ef8b
--- /dev/null
+++ b/mail/opensmtpd-filters/mimedefang/pkg/PLIST
@@ -0,0 +1,3 @@
+libexec/smtpd/
+libexec/smtpd/filter-mimedefang.pl
+@man man/man8/filter-mimedefang.8