Integration with Zoho CRM
Ability to design mass emails
Reports with link click heat maps are nice
When you want to build sophisticated workflows with Campaigns, it becomes a chore. They did not make the interface easy, unlike other automation platforms I tested.
Another frustrating point, as told by our email developer, is that Zoho attaches lines of redundant code to her templates after she uploads them, but strips out the code for mobile adaptiveness.
We had a team of developers working on a drip campaign, and the first few emails they developed were not mobile optimized. Their attempts cost us time and money. Finally, they figured out how to "hack" the platform. Unfortunately, the drip campaign cannot be optimized without "hacking" the platform again, which means another significant time investment.
Before we had a developer doing emails, we created emails in Zoho campaigns with WYSIWYG editor, and the results were less than stellar.
Overall, there are much better products out there.