We're following this request for email batching:
https://jira.atlassian.com/browse/JRASERVER-1369
It is now in progress and we're excited for that to be implemented as part of the core Jira product. We're wondering how long things take normally to get implemented and roughly when we might see this implemented in a release we can upgrade to.
I tried searching for a post somewhere that details this process in greater depth but was unable to find one. The words I was using pulled up lots of tips for how to configure my workflows, but nothing from Atlassian on their process.
Knowing how far out this might be will help us in deciding if we should pick up a plugin to fill in until its implemented.