diff --git a/check_process b/check_process
index f996816..dce862c 100644
--- a/check_process
+++ b/check_process
@@ -19,8 +19,7 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
-		# latest published in community.json
-		upgrade=1		from_commit=dc037965b0fbc1bd59d352c4d2b71a97b1e4768f
+		upgrade=1		from_commit=f2c1f14df484d727f1918821b6ade3887f77ec40
 		backup_restore=1
 		multi_instance=1
 		incorrect_path=1
@@ -43,6 +42,6 @@
 Email=jean-baptiste@holcroft.fr
 Notification=all
 ;;; Upgrade options
-	; commit=dc037965b0fbc1bd59d352c4d2b71a97b1e4768f
-		name=Upgrade from 2.17.1
+	; commit=f2c1f14df484d727f1918821b6ade3887f77ec40
+		name=Upgrade from 2.20
 manifest_arg=domain=DOMAIN&path=PATH&admin=USER&is_public=1&github_account=fake&github_token=fake
diff --git a/scripts/_common.sh b/scripts/_common.sh
index c8dfa70..5a0f3b4 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -285,7 +285,7 @@ ynh_psql_drop_user() {
 #	If you give the name of a YunoHost user, ynh_send_readme_to_admin will find its email adress for you
 #	example: "root admin@domain user1 user2"
 ynh_send_readme_to_admin() {
-	local app_message="${1:-...No specific informations...}"
+	local app_message="${1:-...No specific information...}"
 	local recipients="${2:-root}"
 
 	# Retrieve the email of users
@@ -315,12 +315,24 @@ ynh_send_readme_to_admin() {
 	local mail_subject="☁️🆈🅽🅷☁️: \`$app\` was just installed!"
 
 	local mail_message="This is an automated message from your beloved YunoHost server.
-Specific informations for the application $app.
+
+Specific information for the application $app.
+
 $app_message
+
 ---
 Automatic diagnosis data from YunoHost
+
 $(yunohost tools diagnosis | grep -B 100 "services:" | sed '/services:/d')"
 
+	# Define binary to use for mail command
+	if [ -e /usr/bin/bsd-mailx ]
+	then
+		local mail_bin=/usr/bin/bsd-mailx
+	else
+		local mail_bin=/usr/bin/mail.mailutils
+	fi
+
 	# Send the email to the recipients
-	echo "$mail_message" | mail -a "Content-Type: text/plain; charset=UTF-8" -s "$mail_subject" "$recipients"
+	echo "$mail_message" | $mail_bin -a "Content-Type: text/plain; charset=UTF-8" -s "$mail_subject" "$recipients"
 }