jace/mxsniff

Identify the email service provider a domain or email address is using

mxsniff's Issues

Add more web-mail domains

Would including a larger list of domain names be useful? This one includes some non-common web-mail providers as well: https://gist.github.com/tbrianjones/5992856/

Replace 'webmail' tag with 'personal'

'Webmail' is no longer an appropriate name. The differentiation should be 'personal' vs 'institutional'.

Tag "webmail" providers

The provider list should have a "webmail" flag to indicate a certain provider offers free email at their domain, and that an email address at such a service does not represent the owner's formal association with that service.

Initial Update

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Allow hardcoded domain list in providers

The provider list currently uses MX lookup to determine a provider. However, some well known domains such as gmail.com and yahoo.com have a direct relationship with a provider. These can be hardcoded, saving the DNS lookup. The providers dictionary should accept a domains list, with a reverse lookup table constructed similar to the MX lookup dict (without the special dict type).

Provide a normalisation function to match email addresses

The following email addresses all point to the same mailbox:

1. [email protected]
2. [email protected]
3. [email protected]
4. [email protected]

There are use cases for "normalising" email addresses to confirm two different strings point to the same mailbox (see hasgeek/lastuser#221 for example). mxsniff should provide a normalisation function that:

1. Lowercases the domain portion. (The mailbox portion's case must be preserved as per RFC 5321. Lowercasing it for the purpose of indexing should be a downstream concern.)
2. Strips + suffixes from the mailbox portion.

A custom normalisation function for the google-gmail provider does additional processing:

1. Replaces @googlemail.com with @gmail.com
2. Strips . (periods) from the address

mxsniff will default to the standard normalisation function if a provider doesn't specify a custom function. Combined with #5, this can be used to normalise an email address without a DNS lookup, using just the domain to guess.