PLT-1607 adding more debugging info for email and push notifications

utils/mail.go

@@ -98,6 +98,7 @@ func SendMail(to, subject, body string) *model.AppError {
 }
 
 func SendMailUsingConfig(to, subject, body string, config *model.Config) *model.AppError {
+	l4g.Debug("sending mail to " + to + " with subject of '" + subject + "'")
 
 	if !config.EmailSettings.SendEmailNotifications || len(config.EmailSettings.SMTPServer) == 0 {
 		return nil