title: AWS SQS Boto3 sending messages to dead letter manually
body: <p>So I am building a small application that uses SQS. I have a simple handler process that determines if a given message is considered processed, marked for retry (to be re-queued) or is not able to be processed (should be sent to dead letter).</p>
  
  <p>However based on the docs it would appear the only way to truly send a message to DL is by using a redrive policy which operates over # of receives a message has racked up. Because of the nature of my application, I could have several valid retries if my process isn't ready to handle a given message, but there are also times I may want to DL a message I have just received. Does AWS/Boto3 not provide a way to mark a specific message for DL?</p>
  
  <p>I know I can just send the message myself to another queue I consider my own DL, I would just rather use AWS' built in tools for this.</p>