Yeah, I didn't understand how datadog was working here, now I do, pls. ignore that comment.  For exceptions I'm concerned about a failure of imagination, and that the success of the batch is now dependent on logging.  An example might be someone with some weird russian letters in their email address fails to send or something and logger.info chokes on it.  I'd be surpised if logger.info wasn't wrapped in a try catch that punts the exception upward to us and we die on it.  I'm fine merging without this,  just wanted to raise the awareness that the batch success is at the mercy of logging now.