Here is a simple way to solve the issues when the Mac Mail Keychain issues.

 

  1. Open a new Finder window.
  2. Navigate to “~/Library/Keychains” using “Go To Folder…” (Cmd-Shft-G)
  3. Right-click on “login.keychain” and select “Get Info”
  4. Find the “Ownership & Permissions” section and verify the following:
    • Owner: [You]
    • Access: [Read & Write]
    • Group: [You]
    • Access: [Read only]
    • Others: [Read only]