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Editorial Team
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Asked: 2026-05-16T00:13:39+00:00

I have java web application to which I’d like to add emailing capabilities, however,

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I have java web application to which I’d like to add emailing capabilities, however, I’m unsure what is needed to accomplish this. Specifically I want my app to be able to:

  1. Send emails confirming sign-up
  2. Allow users to send emails to one another, using my app’s domain i.e. dan@my-app.com

From my research it seems I’ll need a mail transfer agent (MTA) like Postfix and possibly a IMAP server like Courier; but I don’t understand the need for the IMAP server.

Thanks.

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  1. Editorial Team

    You need code inside your web app to create and dispatch the email into the SMTP-world. Usually JavaMail is used for this, and you can either enclose it in your web application or (preferred) have the web container provide a correctly configured instance through JNDI. This is vendor specific.

    If you do not have a SMTP-server for JavaMail to connect to (frequently this is Exchange for Windows shops), you can either get one running (ask your IT administrator) or use Google Mail or Hotmail or others if it is ok for your web application to send mail through them. It is a bit tricky to use GMail as a SMTP-server, but when set up correctly works very well.

    You will need the SMTP-server, as it handles all the boring details regarding MX records and resending if the SMTP-server does graylisting, etc. etc.

    Oh, and IMAP is for getting delivered mail, not sending mail. You don’t need it.

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