I posted in an earlier thread on this, there are pros and cons to electronic payment.

You'll find you can mail twice as many postcards for the same $$.As far as outdoor, you might check to see if there are new electronic billboards in your market.  

-Banks aren't "always open" and drop box doesn't provide receipt (harder to track, and they lie about depositing the rent in the dropbox on the last day of the grace period, when in fact they deposit it a few days later, I can't prove it)-Tenants forget to send receipts, and our bank electronic banking does not allow us to see deposit receipt so they cannot write their name or property number there.

Many States, but I guess not all, have switched to electronic keyboxes. 

I've been doing this for years, but lately with the help of online software to help with marketing, screening and collecting rent payments all electronically, my landlording life has become much much more streamlined and efficient.

The Self-Directed IRA and Solo 401k DifferencesIn order to open a solo 401k, self-employment, whether on a part-time or full-time basis, is required;To open a self-directed IRA, self-employment income is not required;In order to gain IRA checkbook control over the self-directed IRA funds, a limited liability company (IRA LLC) must be utilized;The solo 401k allows for checkbook control from the onset;The solo 401k allows for personal loan known as a solo 401k loan;It is prohibited to borrow from your IRA;The Solo 401k may be invested in life insurance;The self-directed IRA may not be invested in life insurance;The solo 401k allow for high contribution amounts (for 2016, the solo 401k contribution limit is $53,000, whereas the self-directed IRA contribution limit is $5,500);The solo 401k business owner can serve as trustee of the solo 401k;The self-directed IRA participant/owner may not serve as trustee or custodian of her IRA; instead, a trust company or bank institution is required;When distributions commence from the solo 401k a mandatory 20% of federal taxes must be withheld from each distribution and submitted electronically to the IRS by the 15th of the month following the date of each distribution;Rollovers and/or transfers from IRAs or qualified plans (e.g., former employer 401k) to a solo 401k are not reported on Form 5498, but rather on Form 5500-EZ, but only if the air market value of the solo 401k exceeds $250K as of the end of the plan year (generally 12/31);When funds are rolled over or transferred from an IRA or 401k to a self-directed IRA, the amount deposited into the self-directed IRA is reported on Form 5498 by the receiving self-directed IRA custodian by May of the year following the rollover/transfer.Rollovers (provided the 60 day rollover window is satisfied) from an IRA to a Solo 401k or self-directed IRA are reported on lines 15a and 15b of Form 1040;Pre-tax IRA contributions on reported on line 32 of Form 1040;Pre-tax solo 401k contributions are reported on line 28 of Form 1040;Roth solo 401k funds are subject to RMDs;A Roth 401k may be transferred to a Roth IRA (Note that from a planning perspective, it may be advantageous to transfer Roth Solo 401k funds to a Roth IRA before turning age 70 ½ in order to escape the Roth RMD requirement applicable to Roth 401k contributions including Roth Solo 401k contributions and earnings.)

We could send someone over to the archives to search the title books which have not been imported into the electronic Land Registry, but it would be far cheaper for you to shell out $300 for title insurance).Most commercial lenders here now mandate you purchase a lender's policy.  

Find a PM that accepts money electronically?

There are positives and negatives:PositivesRent paid electronically on the 1st of the month (majority of rent, tenant still has a portion)Reduced evictions - Applicants lose their voucher if they are evicted so collecting the tenant portion of rent is easier.  

If they pay electronically, that's huge.