I served on Connecticut's State E-recording Committee.

In Cliff Notes, the lenders and attorneys have an account with SimpliFile (or other companies that do this) and an employee fills in a database cover sheet and sends a pdf (or other ways to do this) direct to SimpliFile, which verifies the accuracy of the information and e-files it with the Clerk's office.  The Clerk's office gets a "ding" on their PC re an incoming recording.  Once notified it was ACCEPTED (no errors) by the Clerk, SimpliFile e-notifies the employee and the lender/attorney has access at anytime to view/print the recorded document through Simplifile at no additional charge.

The additional cost for e-filing (usually a few dollars) is passed on to the consumer; the firm does not have to have employees spending time writing checks and mailing documents, including postage costs.  It also eliminates the "recording costs" of a title search or "middle person".

In CT it works well for liens (foreclosure attorneys and mechanics) and mortgage releases; those filings that do not require an up-to-the-minute title bring down (you don't know who is at the counter or what's on the Clerk's desk that will be recorded prior to your incoming e-filing or the title insurance company is willing to take the risk). The State offices and 169 town clerks aren't yet coordinated for e-filing of deeds where state conveyance taxes are due.