I like the e-sign particularly for the reasons you listed - being able to sign and send them a copy without having to print of 80+ pages (my lease and all addendums comes to just over 40 pages) and then deliver or mail them a copy.

When I purchase my list from list source and download it to an excel sheet, how do I get all the addresses printed on my postcards?

Semi gloss on the trim as it's where the finger prints and scuffs typically show up.

I was wondering...is there some proven science behind using letters printed on yellow paper?

I had calendars of scantily clad women doing construction printed, I sent them to every company that I had their contractors renting from me. 

I suggest this for a couple of reasons:1) Tenants can easily alter the credit report/history they supply you; and 2) The fine print of the service agreement to which the applicant consented prior to pulling their credit report, undoubtedly states they are not allowed to share the report or use it for any purpose but informing themselves of their credit score.

We currently email them a paper application which they print, fill out, sign and text me a picture.

The foot print of the existing structure limits your ADU to 50% of that.  

My point is, inventory will grow and buyer demand will decrease once rates go up to 4% In addition to that, the Fed only printed 60% of the entire money supply in the past 2 years.

Is it a bad idea to send the same postcard to out-of-state landlords as it is to pre-foreclosures (i.e. one generic design) to save on printing costs (low printing quantities cost a lot more than high quantities)?