Sending Email By AEM

Try to use HtmlEmail.class .

I hope this code will help you.

    MessageGateway<HtmlEmail> messageGateway = messageGatewayService.getGateway(HtmlEmail.class);
                HtmlEmail email = new HtmlEmail();
                email = mailTemplate.getEmail(StrLookup.mapLookup(emailProperties), HtmlEmail.class);
                List<InternetAddress> emailRecipients = new ArrayList<InternetAddress>();
                emailRecipients.add(new InternetAddress(request.getParameter("email")));
                email.setTo(emailRecipients);
                messageGateway.send(email);