Has anyone here used SMTPmart for sending bulk emails? Would you consider it one of the best SMTP service providers for managing multiple domains and high-volume sending?

I’m currently exploring reliable SMTP solutions for bulk emailing. My setup involves around 25–30 domains, each with 10–15 email addresses, sending about 30–50 emails per day per address. I came across SMTPmart and it looks promising, but I’d love to hear from others who have actually used it.

How has your experience been with SMTPmart in terms of deliverability, ease of use, support, and overall reliability? Would you recommend it over other providers like Instantly.ai or similar services?