@Bean
    public JavaMailSender getJavaMailSender() {
        String host = settingsMapper.getByKey("spring.mail.host").getValue();
        String port = settingsMapper.getByKey("spring.mail.port").getValue();
        String username = settingsMapper.getByKey("spring.mail.username").getValue();
        String password = settingsMapper.getByKey("spring.mail.password").getValue();
        String smtpAuth = settingsMapper.getByKey("spring.mail.properties.mail.smtp.auth").getValue();
        String starttls = settingsMapper.getByKey("spring.mail.properties.mail.smtp.starttls.enable").getValue();
        String debug = settingsMapper.getByKey("spring.mail.debug").getValue();

        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setHost(host);
        mailSender.setPort(Integer.parseInt(port));

        mailSender.setUsername(username);
        mailSender.setPassword(password);

        Properties props = mailSender.getJavaMailProperties();
        props.put("mail.transport.protocol", "smtp");
        props.put("mail.smtp.auth", smtpAuth);
        props.put("mail.smtp.starttls.enable", starttls);
        props.put("mail.debug", debug);

        return mailSender;
    }