Is there any standardized igraph-like library for email address classification/normalization at Google?

I did a search for gmx.de and bellsouth.net and didn't find anything generic. Just lots of whitelists scattered everywhere like the following class. In any case if you're interested in this let me know since I'll likely be designing such a beast in the near future....

https://cs.corp.google.com/codesearch#google3/java/com/google/caribou/base/AddrSpec.java




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