This week Amazon updated Alexa to be able to read your emails. Currently, this only works for Gmail and Microsoft email accounts. If people start changing the way they interact with email by asking Alexa to read the email, visuals will become less important compared to the text versions.
Having tested it out, Alex will first read the From and Subject Lines then ask if you wish to read, reply, delete or archive your email. If you ask Alexa to read it will read the first 10 seconds or so and then let you know how long it will take to read the rest of the email and if you wish to continue or perform one of the other options above.
Will have to see if this becomes a widely used tool for email consumption.