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emaildns
Tiamo Idzenga
Tiamo Idzenga

Reputation: 1186

How to differentiate email service provider domains from company domains?

I am building an application that receives emails and needs to to differentiate email service provider domains (e.g.: @gmail, @hotmail, @outlook, @yahoo etc) from company domains (@contoso.com).

I would like to do this by maintaining a list of known email service provider domains and checking if the domain is present in this list. If it isn't, then assume it is a company domain. Is there a list of known email service providers?

Other options such as an API can be considered.

How would you approach this problem?

Upvotes: 0

Views: 188

Answers (1)

Tiamo Idzenga
Tiamo Idzenga

Reputation: 1186

I have found a list of known free email service provider domains on Github Gist.

However, this doesn't quite cover the question as paid email service providers that are not company domains are not on this list.

Upvotes: 0

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