diff --git a/Dockerfile b/Dockerfile
index be4764eb..96ec0142 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,6 +13,8 @@ RUN apt-get update && apt-get install -y -q --no-install-recommends \
     python3-pip python3-setuptools python3-wheel python3-gpg \
     rsyslog dnsutils curl unbound jq rsync \
     inotify-tools \
+    # To enable compression in imap
+    arj bzip2 cabextract cpio file gzip nomarch pax unzip zip \
  && rm -rf /var/spool/postfix \
  && ln -s /var/mail/postfix/spool /var/spool/postfix \
  && apt-get autoremove -y \
diff --git a/Makefile b/Makefile
index 237dc237..911237c2 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ init:
 	-docker rm -f \
 		mariadb postgres redis openldap \
 		mailserver_default mailserver_reverse mailserver_ecdsa mailserver_ldap mailserver_ldap2 \
-		mailserver_traefik_acmev1 mailserver_traefik_acmev2
+		mailserver_traefik_acmev1 mailserver_traefik_acmev2 || true
 
 	sleep 2
 
diff --git a/rootfs/etc/dovecot/conf.d/10-mail.conf b/rootfs/etc/dovecot/conf.d/10-mail.conf
index 5b05c5fb..f1d8eb82 100644
--- a/rootfs/etc/dovecot/conf.d/10-mail.conf
+++ b/rootfs/etc/dovecot/conf.d/10-mail.conf
@@ -1,4 +1,4 @@
-mail_plugins = $mail_plugins quota
+mail_plugins = $mail_plugins quota zlib
 mail_location = maildir:/var/mail/vhosts/%d/%n/{{ .VMAIL_SUBDIR }}
 maildir_stat_dirs=yes
 
@@ -13,3 +13,8 @@ first_valid_uid = {{ .VMAILUID }}
 last_valid_uid = {{ .VMAILUID }}
 
 mail_privileged_group = vmail
+
+plugin {
+  zlib_save_level = 6 # 1..9
+  zlib_save = gz # or bz2, If this config entry missing, compression is disabled. 
+}
\ No newline at end of file
diff --git a/rootfs/etc/dovecot/conf.d/20-imap.conf b/rootfs/etc/dovecot/conf.d/20-imap.conf
index b722873a..c389e97e 100644
--- a/rootfs/etc/dovecot/conf.d/20-imap.conf
+++ b/rootfs/etc/dovecot/conf.d/20-imap.conf
@@ -2,7 +2,7 @@ imap_idle_notify_interval = 4 mins
 
 protocol imap {
 
-  mail_plugins = $mail_plugins imap_quota imap_sieve
+  mail_plugins = $mail_plugins imap_quota imap_sieve imap_zlib
   imap_client_workarounds = tb-extra-mailbox-sep
   mail_max_userip_connections = 20
 
diff --git a/test/tests.bats b/test/tests.bats
index 9e100524..576b383f 100644
--- a/test/tests.bats
+++ b/test/tests.bats
@@ -1777,13 +1777,13 @@ load 'test_helper/bats-assert/load'
 }
 
 @test "checking zeyple: 3 emails encrypted in john.doe folder" {
-  run docker exec mailserver_reverse /bin/sh -c "grep -i 'multipart/encrypted' /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | wc -l"
+  run docker exec mailserver_reverse /bin/sh -c "gzip -cd /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | grep -i 'multipart/encrypted' | wc -l"
   assert_success
   assert_output 3
-  run docker exec mailserver_reverse /bin/sh -c "grep -i 'BEGIN PGP MESSAGE' /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | wc -l"
+  run docker exec mailserver_reverse /bin/sh -c "gzip -cd /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | grep -i 'BEGIN PGP MESSAGE' | wc -l"
   assert_success
   assert_output 3
-  run docker exec mailserver_reverse /bin/sh -c "grep -i 'END PGP MESSAGE' /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | wc -l"
+  run docker exec mailserver_reverse /bin/sh -c "gzip -cd /var/mail/vhosts/domain.tld/john.doe/subdir/new/* | grep -i 'END PGP MESSAGE' | wc -l"
   assert_success
   assert_output 3
 }