Policy, feature, storage and pricing changes at Gmail, Outlook and Hotmail, Yahoo, AOL, iCloud Mail, Proton, Fastmail, Zoho and the ISP email providers, inactive account deletion deadlines and how to keep an address, spam filter and sender authentication changes that bounce legitimate mail, app and client changes including the end of classic Outlook and Mail app transitions, IMAP, POP and third-party app access changes, AI summary and ad feature changes with opt-outs, outages over an hour, email migration tools and ISP email shutdowns when carriers drop the service, with the provider first and the deadline or step in the title.