I've received notifications and newsletters from Microsoft and Facebook in the past and noticed that both emails came not from an address such as something@facebook.com or something@microsoft.com.Not event something@somethingelse.microsoft.com but both had different domains such as :reply@email.microsoftemail.com andsomething@facebookmail.comWhy is this? Any particular advantage in doing so?Other than not polluting the employees email software, I can't see.
Why do some large companies use a different domain for sending emails?
domains;facebook;email;marketing;bulk email
There are a variety of reasons:-Ceding control of email to a local part of the business e.g. someone@pl.microsoft.com, or a different section of the company for account management reasons.A different business controlling email i.e. outsourced situation where the company can't/don't want to cede control of their primary web domain.Denoting different sections of the company for political, security, or business reasons i.e. staff moving intra-company get new email addresses on each occasion for security reasons (control of the old account remains with the old division and confidentiality is maintained).Chinese walls e.g. British Telecom in the UK was forced by the regulator to split into three separate and competing businesses for a time they were forced to use the same root domain so you'd have someone@retail.bt.com. I've seen similar situations in a law firm where different teams are working for competing clients, so literal and figurative walls have to be put in place to ensure the clients business secrets remain that way.I'm sure there are others, I've seen all of the above in practice. Beyond the corporate structure of large businesses, outsourcing of corporate functions or business confidentiality I can't see any particular advantage for smaller companies.