Email, Outlook & Microsoft 365 Fixes

Email problems at work usually come down to one of three things: the mail app, the account sign-in, or how the domain is set up. Outlook, Microsoft 365 and Google Workspace: setup, authentication, retention and mail delivery problems, with the fix that matches your client rather than a generic checklist. When the same failures hit several people at once it is usually tenant configuration: see Microsoft 365 management, Google Workspace management and email security and 2FA setup.