Is There an API/Web-Specification for Webmail?



Is there  an API/Web-Specification for Webmail at


On Windoze I'm fine using a browser.

On Linux I would prefer to utilize my own front-end interface (probably written in Java, but possibly in just a scripting language).


For example, I could use sendmail or mailx if I knew where to point them.

I have from the help pages:

  • Incoming mail server (POP3):
  • Incoming Server Port Numbers: 995
  • Outgoing mail server (SMTP):
  • Outgoing Server Port Numbers: 465  Why is this important?

But I don't know how to proceed (or if I can).


TIA, Matt

{edited for privacy}

Re: Is There an API/Web-Specification for Webmail?
Community Leader
Community Leader

Welcome to the forums. You're talking to other customers here.

POP3 and SMTP are Internet standard protocols.  You can find lots of information about them on the web.  The official standards are documented in the "Request for Comments," or RFCs, which are the repository of almost all internet "standards."  Google is your friend here.

What you're talking about building is a email client.  There are many choices for email clients.  A very popular free one is Mozilla Thunderbird, which runs on Linux.

Linux has the building blocks for the underlying POP3 and SMTP protocols that you can use in scripts or even your own client, should you want to do something that can't be done in any of the already developed clients.

Good Luck.