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K
Kaustav_Majoomd
Level 3
January 8, 2016
Question

Sending Bulk Email using CQ Mail service

  • January 8, 2016
  • 3 replies
  • 1965 views

Hi All,

I am currenly CQ mail service to send mails. But, as my project requirement, I need to send Bulk mails(84000 at a time). Now,  the current behaviour is, my application sends one mail at a time. Now, it should be able to send all the recipients in one go. How to achieve it? Please help me ...

 

Thanks,

Kaustav 

3 replies

kautuk_sahni
Community Manager
kautuk_sahniCommunity Manager
Community Manager
January 8, 2016

Hi 

Create a costume OSGI service to send email to bulk:

Link:- http://www.roytuts.com/send-bulk-mails-using-java/

// List<String> emails = new ArrayList<String>(); emails.add("email1@email.com"); emails.add("email2@email.com"); emails.add("email3@email.com"); emails.add("email4@email.com"); emails.add("email5@email.com"); //email subject String subject = "Test Email"; //message which is to be sent String message = "Test Email Message"; //send the email to multiple recipients sendEmail(subject, emails, message); public static void sendEmail(final String subject, final List<String> emailToAddresses, final String emailBodyText) { // from email address final String username = "your email address"; // make sure you put your correct password final String password = "your email password"; // smtp email server final String smtpHost = "your mail smtp server host"; // We will put some properties for smtp configurations Properties props = new Properties(); // do not change - start props.put("mail.smtp.user", "username"); props.put("mail.smtp.host", smtpHost); // props.put("mail.debug", "true"); props.put("mail.smtp.auth", "true"); // do not change - end // we authentcate using your email and password and on successful // we create the session Session session = Session.getInstance(props, new javax.mail.Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password); } }); String emails = null; try { // we create new message Message message = new MimeMessage(session); // set the from 'email address' message.setFrom(new InternetAddress(username)); // set email subject message.setSubject(subject); // set email message // this will send html mail to the intended recipients // if you do not want to send html mail then you do not need to wrap the message inside html tags String content = "<html> <body> "; content += emailBodyText + " "; content += " "; content += "</body> </html>"; message.setContent(content, "text/html"); // form all emails in a comma separated string StringBuilder sb = new StringBuilder(); int i = 0; for (String email : emailToAddresses) { sb.append(email); i++; if (emailToAddresses.size() > i) { sb.append(", "); } } emails = sb.toString(); // set 'to email address' // you can set also CC or TO for recipient type message.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(sb.toString())); System.out.println("Sending Email to " + emails + " from " + username + " with Subject - " + subject); // send the email Transport.send(message); System.out.println("Email successfully sent to " + emails); } catch (MessagingException e) { System.out.println("Email sending failed to " + emails); System.out.println(e); } }

 

I hope this would help you.

Thanks and Regards

Kautuk Sahni

Kautuk Sahni
L
lavis01
December 18, 2024

You’ll need to switch to a Bulk Email Service Provider like SMTPmart, SendGrid, Mailgun or SMTPget. Configure your application to use an SMTP relay for batch sending, allowing emails to be sent to multiple recipients simultaneously.

 

Make sure to manage your email list well and ensure your server infrastructure can handle the load. This approach will help you achieve faster, more efficient bulk email sending.

betaitsolution
betaitsolution
June 6, 2025

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