Content type headers and spam checks within Java MAil

Question

Hello there
I have successfully created a java mail api to send any one of the following
plain/text message, with or without attachments, with or without the body of the email to be HTML
I have a question on how to ensure that the email is not marked spam? Sometimes the Spam score goes high if there is olly html for an email that is text/html type.;
What are the possible values for content/type of Mime Message header for following scenarios
An Email message that may have its bodypart as html and may have attachments
An Email message that will have plain text messages along with attahcments and HTML concattenated with text messages ( LIke google maps along with text message]
IF I do messaget.set ("This is my message") andthen I add attachments to the message body part, is it advisable to have two seperate content-type mime headers for these messages? wrt not having higher spam score.
Or Is it advisable to have seperate mime type content headers for text part and sperate for message part.
IS the attachment part also has a seperate mime header content type value?
does the header's content type value is plain/text for messages that are text messages with attachments>?
IS there a way to chek spam scores for messages generated by java mail? The ides is to create java mail API customsied sot hat the sent emails are not marked spams ?
In order for the mail to be having zero spam scrore, it is helpful to have seprate mime content type headers?
Edited by: user9328023 on May 23, 2011 1:45 PM

Answer 1

If you want to create a message that has both plain text and html versions of the main
message content, you want to create a multipart/alternative message, as described in
this FAQ entry.
If that message also needs to have attachments, you should embed the multipart/alternative
part in a multipart/mixed message, along with the attachment parts.
If the html part needs to reference images included with the message, you would replace
the text/html part with a multipart/related part, as described in this FAQ entry.
Combining all these techniques together can seem a bit complicated unless you understand
recursion! :-) Remember that in addition to creating a body part with a text content type,
you can create a body part with a multipart content type, and use that body part in the same
places you would use a text body part.
As for making sure your message isn't marked as spam, well, you're probably asking in the
wrong place, but the simple answer is to make sure that it's actually not spam! Usually the
structure of the message isn't as important as the content of the message.