InfoPath form that mails itself with Lotus Notes client ------> LotusEmail.xsn
You need to have inforpath and the Notes client on your machine

To get past the very strict security, this is what you need to do:
Save the fine to the file system
Right click it in explore and select "Design" - this open the template in Design mode
[File] - [Save As] - a dialog box will ask to "Save" or "Publish" - pick Save then
Select the same file name to over write

Use [Tools] [Form Options...] [Security tab]:


Select and existing certificate or create a certificate.

Save

Now you can open the file and run the demo