Technically speaking no, there are no limits but keeping in view of ISPs rate limits we control number of emails flow from our mail servers. There is no fixed number to measure it. We internally we adjust these values automatically based on total volume of all customers at a given point of time or ISP throttling limits and other parameters.

We have built up with the most scalable infrastructure to ensure the fastest delivery of email campaigns. Many of our customers generally come up with a question like what time it takes to send xxx number of emails? But this is a bit tough to answer. Why because, theoretically if the email list consists of millions of subscribers then it is not an difficult task to send email campaigns to all of those at a stretch in an hour. There are certain factors which are capable of affecting deliverabil...