Genius Sign is telling me my email isn't configured, but it is! How do I fix that?

You may see the following error message when sharing a document by email:

Genius Sign relies on the Apple Mail app to send your scans. This is the Apple Mail app:

Please open it, and try to send an email to yourself from there.

If you are able to send an email from the Apple Mail app:

It means that your phone was configured by your company and has a restriction preventing other apps such as Genius Sign from sending emails. To disable this restriction, ask your IT department to disable the "PreventAppSheet" setting on the mail account configuration (you can even give them this link).

If you are not able to send an email from the Apple Mail app:

Configure an email account in the Settings app. Please refer to  Apple's tutorial for a walk-through.

How to send document with other email applications

If you still cannot use the Mail app, you can try using other mailing apps that are installed on your device, such as the Gmail app, Yahoo Mail or Outlook.
Check out this help article about exporting scans to other apps.