This dynamic content is normally a part of a multipart MIME message. Should be opened with an external viewer in case the e-mail client program can not displa

This dynamic content is normally a part of a multipart MIME message. Should be opened with an external viewer in case the e-mail client program can not display it inline. Regarding the MS teams, plain text messaging covers a huge part of use cases, provided the third party client implementation warns the user about limited rendering support, allowing fallback to genuine MS client.