Hey, miketx! This had me stumped a little so I turned to a colleague in the engineering department, and definitely learned a few things. Basically, it seems like your assumption is right. The goo.gl links may be identified by our vendor as spam.
Even though I'm sure you're not attempting to mass market or piggyback on popular short links (like goo.gl or bit.ly) in order to send out spam messages, because spammers can hide behind links like this (use them to circumvent detection), the system may not be able to distinguish between a good goo.gl and a bad goo.gl and might block them.
We'd hate to see you go, but I understand if this is imperative to your business that it's a big deal. Can you try sending a full URL instead?
Hey there! Any luck with sending a full URL?
Sending a full URL is not an option when using the share button from within Google Maps & Google Photos. The app automatically creates a tiny URL which I cannot modify.
The Google Maps mobile app creates URLs that are in the following format: https://goo.gl/maps/xxxxxxxxxxx.
The Google Photos mobile app creates URLs that are in the following format: https://photos.app.goo.gl/xxxxxxxxxxxxxxxxx.
I understand T-Mobile or your "vendor" wanting to block potentially harmful links hidden within a shortened URL but there's got to be a smarter way to do it because right now it's blocking some very useful sharing features built into mainstream Google/Android apps that are using these same tiny URLs.
Would you be able to user your PC browser to get the full url and see if that sends through okay?
Google disabled the URL short service for that domain. They have a new one now though. I don't know it off the top of my head though.
I read a recent article about it but can't find it now