Which of the following is most likely to cause an email to be blocked by an ISP or corporate filter: Content, volume, bounce percentage or black list-based filters?
In general content/HTML code and black lists are the most likely to trap your emails. Generally only organisations with very large lists – sending several hundred thousands of emails to a single ISP – are likely to have their emails filtered based on volume. For our large volume clients, Telfis limits the volume of emails sent per hour to certain ISPs. If you conduct ongoing list hygiene, including removing hard bounces, unsubscribes, people filing spam complaints and minimise email addresses with bad syntax upon opting in, your bounce percentage should fall well below the danger zone with ISPs.
Related Questions
- If AT&T doesn offer adult content, why would anyone want to turn on the Content Filter and block access to some att.net? What att.net content might need to be blocked?
- Which of the following is most likely to cause an email to be blocked by an ISP or corporate filter: Content, volume, bounce percentage or black list-based filters?
- How does AT&T decide what content is blocked when the Content Filter is turned on? What are the criteria?
