Looking for an SMTP server provider in India—any experience with DigitalAka?

I’m comparing providers for a website that needs transactional emails, such as OTPs and password resets, along with occasional opt-in marketing emails. I came across DigitalAka™ while looking for an SMTP server provider in India. Has anyone used it? I’d appreciate honest feedback on setup, deliverability, support, and pricing, as well as suggestions for other providers to compare.