diff --git a/data/hooks/backup/22-conf_mail b/data/hooks/backup/22-conf_mail
new file mode 100644
index 000000000..018a345d9
--- /dev/null
+++ b/data/hooks/backup/22-conf_mail
@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Exit hook on subcommand error or unset variable
+set -eu
+
+# Source YNH helpers
+source /usr/share/yunohost/helpers
+
+# Backup destination
+backup_dir="${1}/etc/dkim"
+
+# Backup the configuration
+ynh_backup "/etc/dkim" "$backup_dir"
diff --git a/data/hooks/restore/22-conf_mail b/data/hooks/restore/22-conf_mail
new file mode 100644
index 000000000..c069b53db
--- /dev/null
+++ b/data/hooks/restore/22-conf_mail
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+backup_dir="$1/etc/dkim"
+
+cp -a $backup_dir/. /etc/dkim