Adding records through email and Auto Increment field

Adding records through email and Auto Increment field



I have a form that has a field whose value is auto-incremented on load (as per your auto-increment code examples). It works fine when I add a record using the form.

 
Now I want to add a record through email (using the email template and email ID of the form). I tried adding a record without giving any value to the auto-increment field (because I cannot guess the value), but it does not add the record.
 
My question is how do I add a record through email to a form that has an auto-increment field.
 
Thanks,
 
Vasu