That's the reason Content based filtering has never helped to eradicate spam. We use SpamJadoo.com anti spam. That works like charm. Andrew, your emails to us always goes in Inbox. On 08-Feb-2017, 11:01:00 PM Andrew Sullivan 'ajs@anvilwalrusden.com' wrote: From: Andrew Sullivan <ajs@anvilwalrusden.com> To: ua-discuss@icann.org Subject: [ajay.uasg@data.in] Re: [UA-discuss] Spam Filtering Date: 8 February 2017 at 11:01:00 PM IST On Wed, Feb 08, 2017 at 04:47:52PM +0000, Andre Schappo wrote:

Recently I tested sending email from my DataMail 小山@电邮.在线 to

some people on gmail. Mostly they report that my email to them goes

into their gmail Spam/Junk folder. I deduce that the gmail spam

filtering software is treating chinese/unicode email addresses less

favourably than ascii email addresses.

That seems like a leap. How many of those people speak Chinese natively? Most spam systems are Bayesian and have been taught to look for patterns that match other spam. Everyone who has taught gmail to recognize "Han in the headers == spam" will have to un-teach it that. I don't know about you, but since I'm not a native user of Han characters I have certainly taught my spam filters such rules of thumb. A -- Andrew Sullivan ajs@anvilwalrusden.com