They allow you to fill out co-signer information when editing the lease which would lead you to believe they'll get their signatures as well. Nope. They don't have the capacity to electronic signature co-signers, which I found out when the tenant said "my mother was not able to sign the lease". I figured I did something wrong but the company's response:"Our ezSign process only works for the landlord and tenants at this time. We do hope to be adding to this feature in the near future. Once all tenants sign the lease and you receive the signed copy, you can email it to the cosigner. The cosigner can then print out and sign the agreement, then send it back to you for your records."
So bottom line it worked for screening but didn't fulfill my needs to finish the deal.