I use Alpine precisely because it's text based and email is text. Alpine fits the task perfectly and it's quick to command with its keyboard shortcuts. Things make more sense this way and everything stays within its own appropriate scope.
For HTML emails I have configured a "printer" in Alpine that unpacks the HTML part and all relevant images and attachments and writes them to disk, finally launching my web browser to show the HTML file. But I generally just view the HTML email through Alpine's own text conversion and only fire up the full version if the email has important-looking images such as graphs. Mostly the images are just header/footer logos and stuff like that, I don't need them.
For HTML emails I have configured a "printer" in Alpine that unpacks the HTML part and all relevant images and attachments and writes them to disk, finally launching my web browser to show the HTML file. But I generally just view the HTML email through Alpine's own text conversion and only fire up the full version if the email has important-looking images such as graphs. Mostly the images are just header/footer logos and stuff like that, I don't need them.