3 ms·

> a tiny number of email providers The number is not tiny if you include work email addresses: @apple.com, @ibm.com, @whitehouse.gov, @mit.edu, @bmw.com, ...

• gkya 10y ago
  Most often a Google Apps email address.
  • amelius 10y ago
    Lots of companies prohibit the use of gmail. Even sending to gmail addresses is sometimes prohibited.
    • gkya 10y ago
      > Even sending to gmail addresses is sometimes prohibited. How do you know it's not a Google hosted email address if they use a custom domain (with a Google Apps plan one can use a custom domain on top of Gmail)?
      • smrq 10y ago
        Nobody's saying that arbitrary corporate restrictions are well thought out.
      • captn3m0 10y ago
        You can sniff MX records fairly easily to figure it out: https://github.com/jace/mxsniff https://github.com/jace/mxsniff