The UI is very user-friendly, it's easy onboarding process which allows us as an agency partner get our clients up in running with their PWA within hours of signing contracts! No other tool we've found has so many customization options across multiple channels at such low cost compared against others out there (like Zapier).
It would be great if you could also add more integrations like Google Pay or Slack but this should not stop anyone from trying them right away since they're working hard towards adding those too!! I think people will really love how quick & simple these tools are once integrated into your workflow/CRM system + having all channel integration available makes life easier when building campaigns / managing client relationships etc..