read the fine print, it could mean that iOS mail client don't care that much about privacy.
Almost all mail client hide external image by default (and a whitelist mechanism).
I believe several ISPs have deals with Yahoo to offer an email address to their customers. BT (British Telecoms) in the UK use them, as do AT&T in the USA. A huge number of people never change from their supplied addresses, and seeing as they tend to be more likely to click on a link in an unsolicited email, this has the potential to cause quite a few issues.
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People still use Yahoo mail?
More than use Gmail -- http://www.campaignmonitor.com/resources/will-it-work/email-...
read the fine print, it could mean that iOS mail client don't care that much about privacy. Almost all mail client hide external image by default (and a whitelist mechanism).
I believe several ISPs have deals with Yahoo to offer an email address to their customers. BT (British Telecoms) in the UK use them, as do AT&T in the USA. A huge number of people never change from their supplied addresses, and seeing as they tend to be more likely to click on a link in an unsolicited email, this has the potential to cause quite a few issues.