The ability to run campaigns for multiple clients at once, it's very flexible with templates available as well which makes building out your own automated emails easy! It has been great working closely alongside their team throughout this process of switching over from another provider (HubSpot).
I'm not able find anything that we dislike about sambasa so far - but there really isn't much either since they are still new in our market space!! We have seen significant growth within just 6 months using them because everything was made extremely simple when setting up email automations across all contacts/companies you're managing through one interface alone.