Sent mails from App doesn't reach the destination

Hi,

yes, this is a know issue with K9 and Hostgator. Your email provider does accept the mail but for some reason does not send it further. This is an issue from Hostgator’s side as it should reject the mail instead of accepting and silently do not deliver it.

If you search the forum for “hostgator” you will find some threads on the same issue, and you will learn the reason for this missbehavior from Hostgator, eg.

At the moment K9 developer does not seem to want to implement a workaround for mail service providers like hostgator.