Delivery

You send a parcel of no greater than the dimensions of a 5 ft. cube and a 30 lb. weight to a creature with which you are familiar. The creature receives the parcel via a portal which deposits the package on the nearest available and safe surface. The creature also recognizes you as the sender if it knows you, regardless if the package was marked or not. 

This parcel can hold any number of objects, including letters, weapons, or other inanimate items, but the collective properties (size and weight) of these items must not exceed the previous parameters, nor be packaged individually. Living creatures and organic matter can be delivered as well, as long as they do not exceed the size and weight limits, but the duration of the spell demands that the creature(s) being delivered be able to withstand up to ten minutes of no oxygen or be packaged in such a way they do not need oxygen for the spell's duration. Similarly, ill-packaged goods, such as liquids, may leak or suffer loss during transit if not prepared cautiously.

You can deliver the parcel across any distance and even to other planes of existence, but if the target is on a different plane than you, there is a 10 percent chance that the parcel doesn't arrive. In this case, the parcel is returned to you as if by another delivery spell, unharmed and unclaimed.

The duration of spell (which is the time between casting and the actual delivery of the package) depends on distance, whereby the duration takes 1 minute if the sender and receiver are on the same plane and 10 minutes if they are not.