There appears to be an HTC related Yahoomail issue that is blowing up the individual phone forums. I am hoping we can consolidate the threads in one place and get more traction. Ok, before we blame Yahoo lets look at the pattern here. I personally think this is an HTC Sense and HTC app issue. I have a Droid Inc. and use K9 for my email. My email works fine. Yesterday a friend with a Droid Inc. suddenly had her Yahoo email stop working she uses the standard HTC app. I did all the diagnostics, battery pull, changed her email settings from the standard settings built in with Android to the ones my K9 uses and the problem persisted. I then setup my Yahoo mail using the HTC Sense app and had no problems. So I went to the forums and this is the pattern I am seeing. 1. The forum posts from this week with this issue appear to be mostly isolated to HTC phones esp Verizon and Sprint and a few from Tmobile. This makes sense as Verizon and Sprint have most of the HTC Android phones on the market. 2. The problem is intermittent it is isolated to certain accounts. Some people have 2 accounts and 1 works. So I doubt it is related to Yahoo forcing you to use there terrible memory hog of an app. 3. There have been rumors of Yahoo doing some server work recently. That would make sense why some phones work and others don't. Maybe some accounts were moved or on other servers. 4. Not heard anything about the Motorola Phones or the Samsung phones from the past 3 days which is when this started and nothing of Verizon Iphones etc. Some people have accounts working on Ipad, BB or Iphone and not on HTC Android phones. 5. Rumors of the Sprint HTC phones having an issue after a system update. Based on the pattern I think the problem is related to a bug in the HTC sense email app and possibly the combination of some underlying yahoo imap pointer settings for an isolated group of servers that HTC is missing or maybe had hard coded. It just does not make sense that this issue appears to only be impacting HTC phones with sense and those having the issue can get K9 email up and running fine. If I were to see an influx of posts from those with Moto Droids and Dorid X's, Samsung and LG I would be more inclined to blame Yahoo but that simply does not seem to be the pattern. My main problem is that no one owns the issue. Bugs happen but as is always the case with customer support everyone wants to point fingers. Why doesn't Verizon just come out and say this is the issue and we are working with Yahoo and our Manufacturers to address it? They are all concerned about their reputation if they admit an issue or own the issue and they are concerned about there Vendor relationships if they say its and HTC issue and we are working with them. Finally I highly doubt Yahoo is looking to steer people away from third party apps to promote their app. That does not make sense. I am not a gmail fan but they are more concerned about losing users to gmail then they are about trying to sell the pop3 service or drive people to the app. At the end of the day its about ad sales and the number of users and hits. The last thing Yahoo wants to do is drive people away from their site. This issue was a big deal when Android first came out and I think it was more directly related to Google focusing on Gmail then Yahoo. They addressed that although not as well as Apple as we still have to poll Yahoo and waste battery. Either way I hope they fix it for everyone soon. However, I still love K9 without the standard android yahoo email settings. Takes some getting used to but I am sticking with it.