[DuncanWaring]

Yep.

They don’t need to “discontinue Saturday delivery”.

They need to allocate every delivery route to “Group A” or “Group B”.

Group A routes get delivery Monday/Wednesday/Friday.

Group B routes get delivery Tuesday/Thursday/Saturday.

Lay-off half of all employees at all levels of management involved in the delivery of mail; that cuts the payroll costs of that segment in half.

It also makes the existing fleet of delivery vehicles last twice as long.

The only exception to the every-other-day policy would be business customers that get enough mail that it would require an extra vehicle trip to deliver it.

[shelterguy]

Yes, I can see the need for business deliveries everyday. If I got my home mail three times a week it would be plenty.

[Svartalfiar]

Yep.
They don’t need to “discontinue Saturday delivery”.
They need to allocate every delivery route to “Group A” or “Group B”.
Group A routes get delivery Monday/Wednesday/Friday.
Group B routes get delivery Tuesday/Thursday/Saturday.
Lay-off half of all employees at all levels of management involved in the delivery of mail; that cuts the payroll costs of that segment in half.
It also makes the existing fleet of delivery vehicles last twice as long.
The only exception to the every-other-day policy would be business customers that get enough mail that it would require an extra vehicle trip to deliver it.

Decent idea, but really only a temporary solution. Back in the day, governmental post made sense as government business was the main (and sometimes only) way some towns had relations outside of themselves. Postal services are essential to society, but weren't practical for a private venture.
Nowadays, however, our world is so interconnected, and travel is so easy, that the main needs for the government having a post office is gone. Constitution needs to be amended to limit gov post to military bases and some essential gov business. Otherwise USPS needs to just go away.