Possible Clues:

• One posted to Yemeni port, briefly possessing fantastic des res
• Intended recipient of notice sees red, being replaced
• Name on envelope is American banker, receiving treat
• Person named in the post
• Single recipient? Also include most of the others, do you understand?
• Commercial outfit beginning to export electronic letter opener
• Gets a package in the post with a letter-opener?
• Intended receiver may see a daughter shift ecstasy repeatedly
• Person with letters to his name?
• A flower adorning garment for recipient