Pacific Border Crossing - American office

Bureau of Customs & Border Protection
9901 Pacific HighwayBlaine,
WAPh: 360-332-2632
Fax 360-332-2639
Email blaine-export@customs.treas.gov

As per the instructions for this border crossing, they say to fax over the title, bill of sale and their export worksheet (probably only this office's requirement) 72 hours prior to export. They also say, do not assume we have received your fax, so please email them for a status of your export application. Again this is just the instructions given at this particular US customs office. You're probably right; over in your area, they may not want emails from potential exporters.