Hello,I am about to start my first lead generation marketing campaign and I was wondering if there are any seasoned marketing professionals that might be able to provide some insight on the best type of direct mailer to use, the contents to enter into the mailer, whether to utilize the USPS EDDM delivery strategy is a good one, and any other specifics about a marketing campaign for lead generation.

Presume this is all completed at this point as delivery of the  aircraft has been delayed for some time. 

Who arranges for delivery and meets the truck?

Delivery is Aug 2022.

This does not require a signature and the postal delivery person scans the letter when it's delivered and I get an emailed notification.

There were delays in the deliveries but the prices were noticeably lower than anywhere else. 

the underlined sentence is the the promised but not deliver .I have there below paragraph in my letter:I have called and called to ask for someone to hold me accountable, am I deserved to pay $41,000 and have no “mentor” to guide me step by step?

Building package: (all steel, engineering, doors, delivery) $91,700Foundation: $58,700Erection: $26,500I'm in Michigan; I can understand some regional costing differences in the labor intensive portions of a build, but I'm surprised to see that much of a difference on a building package (I'm assuming you are utilizing all steel construction as well, and not rolling other costs into it).

Won't get specific prices, since some of these depend on availability, distance and delivery cost.

The two biggest things they can do is: 1) improve their skip tracing abilities and 2) have a better way to "track" postcard deliveries.