Author: Noé Soriano

Messages rejected by an ISP due to the number of emails sent

Noé Soriano

Many of you have asked us why emails sent to some online email providers sometimes seem to arrive late. Outlook/Hotmail and other ISPs limit the number of messages a given IP can send within a period of time, based on the IP’s reputation. When an IP exceeds its sending limit, every SMTP command will receive […]

7 key points to check the quality of a database

Noé Soriano

We’ve always advised you to build your own subscriber database. Ideally using the double opt-in method, as it’s more effective at building quality databases. But sometimes that isn’t possible, it doesn’t suit you, or you simply need to launch your bulk email campaign as soon as possible. For whatever reason, you’d rather buy your database, […]