#127: Mail.app stuck at fetching mail for gmail accounts on 10.10.3

After upgrading to OS X 10.10.3, Mail.app is stuck at "Fetching Mail..." for all Gmail POP3 accounts.

Connection doctor logs report:

READ Feb 27 09:54:23.788 [kCFStreamSocketSecurityLevelTLSv1_0] -- host:pop.gmail.com -- port:995 -- socket:0x6180002b0f20 -- thread:0x600000861300 -ERR invalid SASL argument xxxxxxx

Add Gmail two-factor / OAuth authentication

Apple introduced new authentication support for Gmail in 10.10.3. However, existing POP accounts will not have this authorization.

Go to System Preferences -> Internet Accounts. Click on each Gmail account that has your POP3 accounts in them. Google's two-factor / OAuth page should automatically pop up. After allowing permission to your account through this interface, the SASL error should disappear and fetching mail should no longer be stuck.


  1. The OAuth page does not automatically pop up, where can I find it.

    Xander on April 17, 2015, 08:22 AM UTC
  2. @Xander If the OAuth page doesn't pop you'll have to set the account up again.

    Anon on April 17, 2015, 08:38 AM UTC

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