The reason is that five versions tend to be executed manually, while 1 million is so clearly impossible to manage manually that it must be automated — and being automated is a lot less work than manual! The technology to automate at this scale is now available, both from email service providers that can take in dynamic content, as well as from analytics systems that can determine the best message at the individual level.
5 Email Marketing Myths Debunked
The reason is that five versions tend to be executed manually, while 1 million is so clearly impossible to manage manually that it must be automated — and being automated is a lot less work than manual! The technology to automate at this scale is now available, both from email service providers that can take in dynamic content, as well as from analytics systems that can determine the best message at the individual level.