You should consider a feature for coinbase to allow for btc to be sent (via lookup) to email addresses. For instance, the Electrum client allows this by the rec

You should consider a feature for coinbase to allow for btc to be sent (via lookup) to email addresses. For instance, the Electrum client allows this by the recipient hosting a bitcoin url on their domain. julian@tosh.us maps to http://tosh.us/bitcoin.id/julian http://tosh.us/bitcoin.id/julian which returns my bitcoin address.