I'm regularly receiving emails from a well-known public website that read as plain text without carriage breaks or effective hyperlinks. My email client is Thunderbird.

Thunderbird helpsite doesn't display an answer. And I'm reluctant to complain to the website if the problem is at my end.

Message source for headers includes this: Content-Type: multipart/alternative; boundary=--boundary_9338_03b8c925-816e-4b55-95c4-b2593da7e5f6

The content in message source that follows the header is preceded by this: ----boundary_9338_03b8c925-816e-4b55-95c4-b2593da7e5f6 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64

The content itself in message source reads typically like this: PCFkb2N0eXBlIGh0bWwgcHVibGljICItLy9XM0MvL0RURCBIVE1MIDQuMCBUcmFuc2l0aW9u YWwvL0VOIj4NCg0KDQo8aHRtbD4NCjxoZWFkPg0KPG1ldGEgaHR0cC1lcXVpdj0iQ29udGVu, etc.,etc.

And, as I've said, the message in the viewing pane is unadulterated plain text.

Can you tell me - where is it all going wrong? Thanks.