Pls…answer…
Another player -> no.
To another character in your account -> yes. Items placed in your Stash (not to be confused with Bag, which is different) can be accessed by all your characters in your account.
Also if you happen to mean transfer data (such as hirlings, codex data, character data) to the same account from other device, it is possible. If you want to transfer to another device, you upload on first device then download from second device.
If that is also what you are looking for? I answered your question.