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htmlnewsletterspam-prevention

Send newsletter in both HTML and TXT format in one email

I'm testing my newsletter in terms of recognition by spam filters. I see some errors. One of them is BODY: Message only has text/html MIME parts. I read that this is because I only have HTML format so I prepared something like this:

<html>
    <title>Newsletter 03/2013</title>
    <body>
    <p>Newsletter content for this month</p>
    </body>
<html>
Newsletter content for this month

But this did not resolve my problem.. Maybe you can suggest me how to avoid this error? Also I found other "spam-kind" errors.

BODY: PL_DISCOUNT
BODY: PL_DISCOUNT
1.0 BODY: PL_NEW_OFFER
0.5 URI: URI hostname has long non-vowel sequence
1.1 BODY: Message only has text/html MIME parts
2.2 HTML_TITLE_SUBJ_DIFF

Any advices?

Emails are sending by web-platform.

Solution

  • Emails that contain a text and HTML version are actually taking advantange of the multipart/alternative MIME subtype. This is part of the structure of raw email data that you usually don't have to deal with. It would be a feature of an email sending library or application to define the content of the text and HTML parts, which can actually be completely different if you wish.