Increased deferrals at Yahoo/AOL/Verizon
Deliverability 101: The Big Three
Oath update: AOL, Yahoo, Verizon MTAs and FBLs
Yahoo introduces Google-style image caching in email (UPDATE: confirmed with more details)
AOL mail seeing Yahoo deferrals as mail integration continues
AOL confirms move to shared mail infrastructure with Yahoo
500 million Yahoo users compromised in “worst hack in history”
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