service would not be used as temporary email; this logic has flaws:
they offer free trial and have some shady domain names,
however we need to be nice
also remove the three of their domains that were already blacklisted
gathers domains that are often on blacklists but should not be
reasoning by @foresto from https://gist.github.com/adamloving/4401361#gistcomment-1493544:
The claim that "sending email to these domains likely will not be opened" is misguided and misleading at best. For example, spamgourmet and its alternative domains allow me to discover which web sites share my email address without my permission, which is one of the few effective defenses against spam. Like many users, I open every single message sent to my spamgourmet addresses unless the sender is has proven to be a spammer (this is exactly spamgourmet's purpose after all) which makes your claim just plain wrong.
Sadly, lists like this one have led some web sites to refuse signups to legitimate users, or worse yet, to silently discard outgoing messages to legitimate addresses. Congratulations. You're encouraging broken web sites, lost information, failed communications, increased spam, and just plain bad user experiences. I suggest you rethink this, or at least do a decent job of keeping legitimate domains off of your list.
