The message that you received should only appear if you don’t have an email account set up and emails cannot be sent. This is not our implementation, we just ask the system if a mail can be sent and if the answer is Yes we then proceed with our implementation.

Please check Settings – Contacts – Default account to make sure the correct account is set. Also, you need to make sure that you have the correct credentials in Mail app. We found a discussion thread about a similar issue, maybe it helps: Apple Discussion.