Currently i am working on the mass e-mail activation and i have a general question on the documentation.
"Best practices for e-mail mass sending processes recommend to create a sub-domain as sender domain and not use your main domain."
The exact reasons for working with sub-domains is not given. Can anybody explain why a sub-domain is recommended? What are your experiences with your customers in this area?
Not all companies are in favor of creating addition email domains. What are the drawbacks of working with the main domain?
Looking forward to hearing from you.