You can make changes in the running campaigns and publish which is very practical.

Leanplum is a cross-channel CRM tool for personalized communication. Very flexible segmentation and A/B testing. My favorite part is the A/B test reporting, where you can apply statistics, slice + dice results, and evaluate across hundreds of metrics retroactively. Our previous tool had limited reporting, triggering was hard, segmentation required a lot of effort, and there was no email out of the box.

We chose Leanplum for the CRM, segmentation, and a/b testing capabilities across both the messaging layer as well as the product config through variables. This has enabled us to reach market-leading LiveOps capabilities.