Index: head/mail/linux-thunderbird/Makefile
===================================================================
--- head/mail/linux-thunderbird/Makefile	(revision 438763)
+++ head/mail/linux-thunderbird/Makefile	(revision 438764)
@@ -1,17 +1,20 @@
 # Created by: Andrew Pantyukhin <infofarmer@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	thunderbird
 DISTVERSION=	45.8.0
 PORTREVISION=	0
 CATEGORIES=	mail news net-im ipv6
 MASTER_SITES=	MOZILLA/${PORTNAME}/releases/${DISTVERSION}/linux-i686/en-US \
 		MOZILLA/${PORTNAME}/candidates/${DISTVERSION}-candidates/build1/linux-i686/en-US
 
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Mozilla Thunderbird is standalone mail and news that stands above
 
 USES=		tar:bzip2
 
+DEPRECATED=	Use the native thunderbird mail/thunderbird instead
+EXPIRATION_DATE=	2017-05-31
+
 .include "${.CURDIR}/../../www/linux-seamonkey/Makefile.common"
 .include <bsd.port.mk>