A lot has been written about it. Basically you've got to have Outlook and FileMaker "in the same bits", i.e., if you're using FileMaker 14 @ 64 bits, then your Outlook must be @ 64 bits.
Here are some links, hope you find them useful:
That is not an easy one Ibrahim, I'm not a PC man, but I'll get there (I think...)
I found also this (what does it mean?):
In addition, instead of using the Send Mail functionality in FileMaker Pro to initiate an email, you can use the Open URL script step to send an email instead. The calculation syntax for the Open URL command looks something like this.
Issuing the syntax of the Open URL command will launch the default email client but will not automatically send the email.
Centuries ago that was the method to send emails from Filemaker. If you create an URL with form:
When you run a script with OpenURL and use that one, it will automatically open your email client and create a new email with that address.
See this link for more info:
And download this sample file so can see it in action: