Ned, On 15/06/2014 02:42, ned+ietf@xxxxxxxxxxxxxxxxx wrote: ... > Some data to support this conclusion: [that webmail is not dominant] > > http://emailclientmarketshare.com/ Hmm. I was curious about what those numbers really measure. Judging by http://litmus.com/email-analytics, it seems that they refer to a sample of emails that (a) contained a specific HTML snippet and were (b) opened as HTML by the clients and (c) by implication, had been sent via a mailing list. It seems very likely to me that the sample consisted of spam. I'm not sure that the numbers reflect unbiased statistics, unless you're a spammer. In any case they don't indicate how many people open email in plain text mode (which I alway do if possible, precisely to avoid embedded code). That said, they certainly show that one size doesn't fit all. Does anyone have statistics of POP3 vs IMAP vs split-UI? Brian