Google will track packages based on emails in gmail. I works OK for amazon, so, i.e. the vast majority of all packages shipped (mild exaggeration). It works a little less will but not this terribly for less conventional shipping confirmations.
I don't think I've ever seen it work as well as just going to the delivery services website, however - so it's critical that it's relatively bug free and low-overhead.
I don't think I've ever seen it work as well as just going to the delivery services website, however - so it's critical that it's relatively bug free and low-overhead.