On 4/8/2020 12:54 PM, Brian Adkins wrote:
I was able to write a simple wrapper around smtp-send-message and get
it working through SendGrid in a few minutes (see below), but I wasn't
able to find any examples of sending emails containing both a plain
text version and HTML version. Can anyone point me to some examples?
Thanks,
Brian Adkins
You done the hard part. Once you can send a plain text message, HTML is
not much harder.
You have to construct a MIME multipart message, which has a particular
internal structure.
See:
https://stackoverflow.com/questions/10631856/mime-type-to-satisfy-html-email-images-and-plain-text
http://www.enewsletterpro.com/articles/multi_part_mime_messages.asp
https://www.ietf.org/rfc/rfc1521.txt
My solution is to use message templates like the attached - which shows
using not just multipart but also embedded graphics. My program
customizes the message by substituting for the '@' preceded "variables"
in the template. Feel free to (ab)use the same style or adapt it for
your needs.
George
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Subject: confirm password reset
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="__ALT__"
This is a MIME-encoded HTML message. If you are seeing
this text only section, your mail program either is too
old or is not configured properly.
--__ALT__
Content-Type: multipart/related;
boundary="__REL__"
--__REL__
Content-Type: text/html; charset=us-ascii
Content-Disposition: inline
Content-ID: <body>
<html>
<body>
<p>@USERNAME,</p>
<p>A request has been received to reset your password<br>
<br>
If you wish to reset your password, please confirm by<br>
clicking on the link below. Shortly you will receive<br>
another email containing a new password .
</p>
<p>
<a style="margin-left:20px" href=@LINK_0>Reset My Password</a>
</p>
<p><br>
Message sent at @SEND_TIME on @SEND_DATE.<br>
Links will expire at @LINK_TIME on @LINK_DATE.<br>
If you believe you have received this message in error,<br>
Please contact technical support and reference @REFERENCE.
</p>
</body>
</html>
--__REL__
Content-Type: image/jpeg
Content-Disposition: inline
Content-Transfer-Encoding: base64
Content-ID: <logo>
base64 encoded logo image goes here
reference in body as <img src="cid:logo">
--__REL__
--__ALT__--
