Too small text when printing incoming mail

I can’t find how to change the text size when printing a received mail message

The message will print using the text size specified in the message HTML, unless it is a plain text message, in which case you can choose the default display text size in your settings.

If it is an HTML message, you can view HTML messages as plain text, but you will lose any formatting and embedded media.

Thanks, Gary. I didn’t think about HTML. Your good explanation has cleared it up for me. I do wish there were a way to change text size in the print dialogue. I don’t like having to change “Read all messages in plain text”. But we work with what we have. Many thanks.

Yeah, unfortunately you can zoom in and out of a message (Ctrl + and Ctrl -, Ctrl 0 to reset) but that does not affect the print size.