tradero, Once again, I am condoning a written letter and not an email. Taking the time to send a written letter indicates that you are serious.
You write well so you should have no problem with your letter.
Keep the letter brief. State that you want to make Star aware that you are unable to receive, Spanish customs is blocking, request their help, explain that you know others who want to buy. Include copies of the official documentation that you mentioned.
You may want to use a slightly larger font and bold print with the "Attn: CEO Jonnie R. Williams Sr" line.
Do not be surprised if you receive a note of appreciation and possibly some samples or a test shipment.
Star Scientific, Inc.
Suite 110, 4470 Cox Road
GLEN ALLEN, VA 23060
USA
Attn: CEO Jonnie R. Williams Sr