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Editorial Team
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Asked: 2026-05-31T16:14:57+00:00

A friend of mine has to send a normal email using ONLY HTML/HTML5 (or

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A friend of mine has to send a normal email using ONLY HTML/HTML5 (or CSS/CSS3, but that will be of little use for this problem) for his school.
His classmates already said that can’t be done without mailto: etc., but the teacher insisted it was possible. What do you guys of Stackoverflow think? We read about setting up you own smtp-client, but there was no example and we are not experienced with HTML5.

Thanks in advance.

EDIT:

If you guys think you know a way to fool the teacher, for example use ServerSide Scripting without let the teacher know, we’ll accept it as well ;).

Edit 2:
I was unclear in the question; the prblem is to SEND an email without mailto: etc. using HTML, not an email containing HTML

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1 Answer

  1. Editorial Team

    There used to be cross-protocol hacks based on POSTing a form to a different port. With carefully crafted payload and fault-tolerance on the server side you could make form data appear as a different protocol, e.g. IRC, SMPT or FTP. This is obvious opportunity for abuse (e.g. turning every website visitor into a spambot), so these holes have been patched in browsers:

    Within intended scope of the standard you can’t send an e-mail without server-side help or mailto: protocol.

    “HTML5” WebSockets are not raw TCP/IP sockets, so you can’t use them to connect to non-WebSockets servers. You are not allowed to use port 25 with them, and the handshake required for WebSocket connection is not compatible with the SMTP protocol.

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