This question is similar to Standard way to detect mobile mail client? but not sure there's a solution inside. I understand how to handle mobile format with specific, screen-size-dependent css. But what about content AND/OR images ?
Case study :
- if mail is opened on desktop client app (Thunderbird,...) or web app (Gmail, ...), images say "download our iPhone app or Android app" with specific links to each app.
- if mail is opened on iOS, image says "get our iPhone app" with app store link.
- if mail is opened on Android, image says "get our Android app" with market link attached.
Is this even possible ? Are there tools to do it ? How would you proceed ?
Thanks !