remove anonaddy

[milachevalier]

Same reasons as #846 in principle.

Unlike simplelogin domains, anonaddy implements unique subdomains for each user, it would be easier for webmasters to block subdomains that are misusing the service. From what I can see there is a hard limit to shared aliases that each user can use in the free tier making it unlikely to be abused beyond an extent.

[ghost]

AnonAddy's free plan is for receiving only. You cannot reply to messages. This is essentially the same as disposable email.

[willbrowningme]

Thanks @milachevalier I've opened a pull request here. AnonAddy is not a disposable email provider.