If you use a different app for email, open that instead.

If the MOBI file is saved to a cloud service like Google Drive or Dropbox, you can add those services in MOBI Reader. Tap Edit at the top-right corner of the screen, select your cloud service, then follow the on-screen instructions to access the file.

If the MOBI file is saved to a cloud service like Google Drive or Dropbox, you can add those services in MOBI Reader. Tap Edit at the top-right corner of the screen, select your cloud service, then follow the on-screen instructions to access the file.

If the MOBI file is in the cloud, it may take a few minutes to download before opening.