Reviewers see Novu as a capable, developer-friendly notification toolkit that makes multi-channel messaging easier to integrate and manage. They repeatedly praise its clear documentation, workflow visualization, broad service integrations, and the transparency that comes with its open-source model. Several comments suggest it fits complex product setups and self-hosted deployments, especially where data control matters. Criticism is thin, but one reviewer explicitly wants a hosted option that still keeps data in a customer-controlled cloud database, and another is still evaluating environment and staging workflows.