DropCoins are the best way to send bitcores over email or Dropbox, no account necessary.
A DropCoin is a shareable file which contains bitcores, like a digital envelope for money.
This website lets you create DropCoins and claim their funds.
Recipients don't need a bitcore wallet to receive funds.
Both parties can access funds in a shared DropCoin until the funds are claimed.
Your funds are never entrusted to a third party, including this website.
BropCoin are protected by a password which you create.
This service is free (tips voluntary), open source, and runs only in your browser.