Topic
On a document library configured to receive emails, a Nintex or Sharepoint Workflow does not start, when a new item is created from an incoming email.
Resolution
The issue can be solved by running the below command either through 'Command Prompt' or 'Windows Powershell'.
This changes a Sharepoint setting that allows the workflow to run when emails are received in an email-enabled doc lib.
stsadm.exe –o setproperty –propertyname declarativeworkflowautostartonemailenabled –propertyvalue yes