This is absolutely bizarre, and I really really like it!
Well then, this is a thing. Following the recent debate regarding the GOI list (which I will not go into here), I noticed that quite a few GOIs on the list have been neglected for quite some time, ALEXYLVA being one of them. We've never really seen anything from this world without the University's perspective being in play, and while they are still present, they're mostly angry about mail fraud.
Next stop: the UIU! (Maybe. Possibly.)

I'm no latin scholar, except i am, a terrible one, and my terrible latin sense is telling me that that says 'common author' or something along those lines. Something better would be along the lines of "scriptor scriptura" although that isn't declined.
Great job on this, btw.

The image on this article was created by myself using Pixlr, with the wreath asset taken from here: https://en.wikipedia.org/wiki/File:Nova_Roma_Flag.svg
However, as Wikipedia states:
This image only consists of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain. Although it is free of copyright restrictions, this image may still be subject to other restrictions.
The font used for the script beneath the "SPQR" initials is a variant of the Cherokee Unicode: https://en.wikipedia.org/wiki/Cherokee_(Unicode_block).
Noting that the new image used in this article is based off of this image, edited by AgentAX, and is cc-compliant.
Mm Mm Good
You managed to do a "dogs hate mailmen" SCP, and make it work. +1
This is goofy-yet-terrifying, which is my favorite kind of terrifying. Also, I appreciate the presence of American languages in the letter; cultural absorption was one of the things that the Romans were really, really good at, and it's something that gets left out frequently, despite being one of the more interesting aspects of AU. +1
I used SCP-2487 for an SCP that failed and got deleted, but you made an even better one with more details, etc!!! XD
So Alexylva finally got sick of the Foundation's shit, as they continued to pluck anomalies from their mail.
ATTEMPTING TO INTERRUPT THIS SENTENCE WILL RESULT IN HARSHER PUNISHMENT.
For some reason I'm imagining their authorities comes rushing in the Foundation-verse, only to be able to reach a peaceful compromise. Or we could have an article where they're mega-pissed, which could be cool as well.
I have to apologize, I got the names of most of the combines mentioned in the final note wrong. They have been rectified. Also, I missed the fact that the Phitransimun Combine was the postal service, not a manufacturing corporation. I am sad.
anti-tank mines
Are these wolves significantly denser than the 60-68 kg Canon dirus of prehistory? Anti-vehicular mine fuses generally require hundreds or thousands of kilograms to detonate.
I am incapable of doing math, and also suck at finding sources on military equipment without fear of ending up on a watchlist. Will fix.
You could just say "anti-tank mines (fused for 60 kg targets)" or something. Or not worry about it much, I figured either the modifications made these things as heavy as a car or the mines were HEAT warheads but with anti-personnel fuses, or something.
Edit: Reading Wikipedia pages on military equipment or Global Security or even checking out a Jane's from your local library probably doesn't put you on a watch list. If it did that list would be uselessly long.
That last part was a joke— I mainly just can't find reliable/easy-to-read sources. Also, what exactly is a "Jane's"?
(Yes, I am a pleb. Sue me.)
Jane's is a publisher of hardback/physical annual guides on military equipment, things something like Jane's Aircraft Recognition Guide, with increasing specificity. We had them around as kids, don't know why.
I think they have an online presence, but Global Security is usually my go-to when Wikipedia doesn't cut it. It can be kind of a pain to navigate, but the articles aren't bad once you find them.
Was almost going to upvote just because this basically takes place right in my backyard, but you did a fine job of mixing very disparate elements (portals, superdogs, postal employees, ALEXYLVA) and meshed them together almost effortlessly. +I!