Why
is my Message detected as Spam and how can I avoid it
MailList Controller sends email messages in the same
format as your regular email client does. The message
format, message encoding or the mailer itself is not the
problem. In most cases the content of the message is the
reason why a newsletter message gets detected as spam.
Check your Message Content and Subject:
- Avoid typical spam terms like "business
offer"
- Include a plain-text part(!) when sending out HTML
messages
- Avoid inline images with only a few words of text
Check the Email Address (List Email Address) and
Outgoing Mailserver (SMTP Server)
- Make sure the specified list email address belongs
to the outgoing messages (SMTP) server!
This issue is very important - if the sender email
is from a different provider, then you will be
blocked by most anti-spam filters or the message
will be rejected by the outgoing mailserver.
- Today many mailserver support the Sender Policy
Framework (SPF), as defined in RFC 4408 or use the
DomainKeys Identified Mail (DKIM) for associating a
domain name to an email.
How
to Read and Analyze the Email Header Fields of a
Message
Its also recommended to send a test message to a
spam-protected email account and/or a webmail (e.g.
freemail) account to verify the spam rating of the
message.
Send out your newsletter email
messages to subscribers only and allow them to
unsubscribe!
Common Issues:
The header often contains details about the
spam-rating:
e.g.
1.1 MPART_ALT_DIFF BODY: HTML
and text parts are different
Include a plain-text part to your HTML message. (use the
"Extract ..." function)
1.2 TVD_FW_GRAPHIC_NAME_MID
BODY: TVD_FW_GRAPHIC_NAME_MID
Rename the inline image e.g. use 1.gif instead of
header.gif
1.4 SARE_GIF_ATTACH FULL:
Email has a inline gif
Use a different format e.g. PNG instead of the GIF
image.
0.8 HTML_TITLE_SUBJ_DIFF
HTML_TITLE_SUBJ_DIFF
Replace the title tag in the html sourcecode. (remove
<title> ... </title>)
1.3 MISSING_SUBJECT Missing
Subject: header
Add a subject to your message
1.7 SARE_GIF_STOX Inline Gif
with little HTML
Add more text/html content or replace/remove image.
0.6 HTML_IMAGE_RATIO_02
BODY: HTML has a low ratio of text to image area
2.5 HTML_IMAGE_ONLY_16 BODY: HTML: images with 1200-1600
bytes of words
Add more text/html content or remove image.
1.6 MY_CID_AND_CLOSING SARE
cid and closing
1.5 MY_CID_AND_STYLE SARE cid and style
1.6 MY_CID_ARIAL2_CLOSING SARE cid arial2 closing
1.6 MY_CID_ARIAL_STYLE SARE cid arial2 style
1.5 MY_CID_AND_ARIAL2 SARE CID and Arial2
Remove style/font tags
(<div>,</div>,<font>,</font>)
before and after the <img ...> tag. If its not
possible try to change the font e.g. use MS Sans Serif
instead of Arial.
How
to Read and Analyze the Email Header Fields of a Message |
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