Can ask ask seriously if this is being exaggerated? It would indicate you get hundreds of orders a day really.

I consider myself a US Postal shipping "expert", self titled. Being devil's advocate here, Can you give me say.. 10-20 or so examples, all from the same day? Should be pretty easy to cut & paste tracking numbers.

A tracking number reveals neither personal information nor sales info. I'm willing to take the time to help you understand what is going on, you're blaming the US Postal service for what seems to be an EXTREME amount of failures, and saying you get a very high number of emails on a daily basis complaining. Do I "believe" a Priority package "can?" take longer. SURE! But I also believe the USPS is pretty fast and accurate, so show me some examples! Here's some:

9405511899561222582350 (Two days, From MO in IN, no personal info)
9405511899561713674076 (Mo to PA, 3 days)
9405511899561114952209 (MO to FL, 2 days)
9405511899561134752117 (MO to FL, 5 days but over a weekend)

Let's see those tracking numbers so you can get some advice you asked for!

Here's what I see. First off these are scattered all over the boards on dates.

Tracking: 9405511899561337934907 5 days Priority. You printed on the 3rd a Wednesday, but not in the PO's hands until noon the next day a Thursday, it arrived 3PM on Monday. You can't call this 5 days.

Tracking: 9405511899561165002915 5 days priority. Again printed on one day, picked up the next past 3PM, and it was in CALIFORNIA the next day, From Friday afternoon to Tuesday delivery is not 5 days.

Tracking: 9400111899561157792739 7 days priority. According to the tracking, was printed on the 17th (A Wednesday), but not taken to the PO until Friday morning. This was First Class, not Priority, and Wellsville Kansas is way outside a metro area. Friday to Wednesday (over a weekend) is not 7 days.

Tracking: 9405511899561158937279 5 day priority. Printed one day, taken to the PO the next, in this case at the PO at 6:45 at night (on Thursday), delivered on Monday

Tracking: 9405511899561112537385 5 days priority: Picked up on a Wednesday, in Texas Saturday but marked as "Undeliverable as Addressed", magically delivered Monday.

On all of these except the last cause I can't tell, you print postage one day and it's the next day (often late in the day) or even the next that it's in the PO's hands. You can't use that to measure. It happens, it happens all the time with me cause my mailman comes and goes by noon, but I don't see an issue here. I don't know how you operate, how you inform customers you've shipped, or anything, but if you're truly getting those types of question 12 a day, 2 more in 15 minutes, and this is after people check their tracking info, I don't know what to tell you. The USPS appears to be doing their job.

Get to know your mailman. Ask him to scan when he picks up. Mine does, although he's a rural worker and they're paid by packages, so he WANTS to. If that doesn't work you can Request a Pickup online and they will make a special trip. I've learned to never drop off, especially "express" packages. I dropped off a 2-day Express at 9AM that didn't get scanned in ANOTHER PO until later that day past 7PM, "missing" the guarantee cutoff so no money back guarantee. You know, since they didn't get it until late that night.

Were those tracking numbers you provided from inquiring customers?

FYI, I order some stock parts from a company in Florida, and UPS is almost always 6 days and they miss often enough to annoy me.

I used Endicia and Stamps.com at the same time for awhile. At the time, Stamps did not support the International shipping Endicia did, but about 5 years ago they did and I prefer STAMPS for a few reasons.

1. I always found it easier to use. With Endicia, I recall having to download & customize my own templates. I'm sure this is better now though.
2. It's $15.99, and that's refunded if you hit a certain level of Priority and Express shipments.
3. It supports two label printers and the laser all at the same time, with many built in labels/sheets.
4. It too has non-USPS insurance, cheaper, and I've never had a problem with claims.
5. It too emails customers the tracking info.
6. It's also the BEST I've seen at address checking.
7. It has some custom features I like, like late mail cut off.
8. I read but don't know for sure that Stamps shows the postage before you print when Endicia doesn't.
9. I can remove mail classes that I never use, for Example Regional C, Large and Very large packages, etc
10. Customer support has been helpful, never replying immediately with a form letter.