I don’t think any large providers use SpamAssassin as the basis for their filtering systems.
Aloha, Michael. -- Michael J Wise Microsoft Corporation| Spam Analysis "Your Spam Specimen Has Been Processed." Open a ticket for Hotmail<http://go.microsoft.com/fwlink/?LinkID=614866> ? From: mailop <mailop-boun...@mailop.org> On Behalf Of Blake Hudson via mailop Sent: Friday, October 25, 2019 12:25 PM To: mailop@mailop.org Subject: [EXTERNAL] Re: [mailop] Does sending HTML only email affect delivery? Sending HTML only messages or messages where the HTML and the plain text parts vary significantly is a SpamAssassin rule that will help push your message into the junk folder. These rules are weakly weighted, and unlikely to land your message in the spam folder by themselves, but should be taken as a sign that legitimate email messages have both HTML and plain text and that they are often similar (at least in the eyes of the SpamAssassin authors). AFAIK, SpamAssasin is the mechanism for nearly all content based scanning tools. --Blake Marc Goldman via mailop wrote on 10/25/2019 2:04 PM: In the past, it was always better to send MIME compliant emails but as more and more developers come on with a “who uses Text anymore anyway” mentality I wonder if this is changing. Please dont shoot the messenger as I know there are folks on here who most probably do use TEXT only but most likely you would not be the target recipient for such messages. But my question is: will one get spanked in the delivery department for sending HTML only emails? Thanks! Marc Goldman _______________________________________________ mailop mailing list mailop@mailop.org<mailto:mailop@mailop.org> https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop<https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fchilli.nosignal.org%2Fcgi-bin%2Fmailman%2Flistinfo%2Fmailop&data=02%7C01%7Cmichael.wise%40microsoft.com%7C150c937f60b94b1803cc08d759816e7e%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637076284752969401&sdata=UhHYlhso7t2yrNM4TsW%2BpSegD7amplti%2BgtoFnBVqg0%3D&reserved=0>
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