Email Polling and Retrigger Functionality

Question

Hi All, 
 I have a scenario like I have to send an email from Appian to the Users (users who has a specified mail box) and I am looking for the following functionalities 
 
 1.Acknowledgment message from the end point or from the mail box that the message has been delivered back to Appian. 
 2.If the Mail is not delivered, then it should try retriggering it until the success message is received. I know that this can be handled in Appian if and only if we are knowing how can we get the point 1 sorted. 
 
 TIA :) 
 Harsha

Robert Shankin · Answer

Harsha - I appreciate the use case and the challenges you're facing. Technically, the solution you've proposed is probably possible. 
 That said, this isn't recommended. Depending on the volume of these transactions, you could add strain to your mail server. Also, it's hard to control the inputs being given to process, which leaves you vulnerable to unpredictable and unexpectedly high memory utilization in Appian, which may impact all applications on the platform. 
 If you're aware of the performance implications, and you determined to proceed, I would ask you to contact your Appian Account Executive to examine whether or not this configuration has licensing implications. 
 Ideally, all of the personae in the process would be Appian users. If that's not possible, the next best alternative is embedded SAIL. If that's not consider how Appian Web API's and Integrations could be useful.