I am a Zoho Creator Trainer, and I use Zoho Campaigns to reach out to my audience when I launch a new Zoho Creator course. Annually, I do two batches with only five to six candidates per batch. It's a very limited batch, and it's open only for a limited period of time. During that time, I send out my emailers via Zoho Campaigns. Other than that, I don't use the solution much.