Mojave 10.14.4 fails to Authenticate Gmail account

My Gsuite is also an old one also that is grandfathered but it is using an email address I have used for 20 years. I will switch to a non apple computer before I will give up that email address and I don't have to pay Google and they have much better spam filtering than other places where I might host that email address with my own domain. I like the Apple mail.app but and using Spark now.

I've tried the various fixes too and nothing works. So very frustrating. I use the grandfathered GSuite as well. My iPhone and iPad still work fine with my Google Mail account through Apple Mail and were updated to iOS 12.2 yesterday. At least I have the access on those devices, but I use my iMac constantly for email.

Hoping for a speedy fix.

Same issue here, today I update my iPhone and iPad and G Suite accounts are not working (endless loop asking account password), this is also happening in Mojave 10.14.4 since today.

Regular Google account (not G Suite) is working fine.

I had this problem myself. Of three gmail accounts, it seems to affect only Gsuite accounts (the account affected was for a domain that I am the admin for so I can confirm that it was Gsuite only.

The workaround that the Google customer service rep helped me come up with involved turning off two-factor authentication, then deleting the account and setting it up as a manually set up mail account (using imap.gmail.com as the incoming server and smtp.gmail.com as the outgoing server).

This should tide us over until Apple comes up with a fix.

I reverted back to 10.14.3 from a time machine backup. Turned off automatic updates and updated my changes made since the old backup. Everything works fine now.

So frustrating that Apple has let this slip through.

The official response from Google is that

authentication method for G Suites accounts must be Exchange (a Microsoft ecosystem, hilarious) Gmail method is for consumer accounts. Tested and running. Syncs contacts, calendar and mail.

Just follow this steps and will work flawlessly.

https://support.google.com/a/users/answer/7649685?hl=en

Why is it taking so long for Apple to sort this mess out? Given the huge number of people using Gmail on Apple computers, one would have expected this to have been tested prior to the 10.14.4 release. Very poor show Apple.

This isn't working for me. I get a message that I'm not recognized, and this is using an app-specific password. So I think the authentication is breaking in other ways than what has caused this initial problem.

Yes, and yes. IMAP has been enabled since I've had my email hosted on Gsuite to be able to use Mail and other apps.

I just called Google, and they suggested trying the Enforce access to less secure apps (I had it set to Allow), and said it may take a few hours to propagate. I'm not sure this will change anything, but it seems there are other authentication issues beyond the Mac bug.

FWIW, I have no problem with my MacBook Pro which hasn't been updated to 10.14.4, my iPhone, or my iPad (both 12.2).

For what it's worth, this solution (or variants thereof) did not work for me.

In my case I had no problem with a personal account or a private-domain Gsuite account that uses standard authentication, but a corporate Gsuite account that uses CAS sign-in continues to throw the "Email Address Mismatch" error (which seems to be slightly different than the error a lot of people here are getting?).

I assume at least in my case it's the external sign-in that's causing problems (not the first time, won't be the last) but will have to wait for Apple to issue a fix.

Made it working again.

Try this workaround: https://forums.macrumors.com/threads/mac-mail-app-broken-for-some-gmail-users-in-macos-mojave-10-14-4.2175312/page-4#post-27232575"]Mac Mail App Broken for Some Gmail Users in macOS Mojave 10.14.4

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UPD: But after I removed the certificate my Gmail account disappeared.

I have this problem too. I don't want to use third-party application to solve the problem of Apple.

I have 4 GSuite accounts and don't want to change them to read my mail.

It's interesting to hear WHEN Apple will remove this issue, because it's critical to me.

Same problem here. My personal Gmail account works and I can remove it and add it, but my business (paid) GSuite account does not work. When I authenticate with paid account credentials, my personal account is added to Mac OS Internet Accounts. If the personal account was added first, then the error message is "You have already logged in as ....".

@lowfreakwency, here's what I posted earlier (YMMV):

I had a number of Gmail accounts with this problem - although not all my Gmail accounts were affected. I got tired of waiting for a fix from Apple, so here's the workaround I used on all of them:

1) Quit out of the Mail app if it's running.

2) Completely remove (not just disable) the affected account(s) from System Preferences > Internet Accounts.

3) Log into https://accounts.google.com/signin/v2/identifier.

4) Click on Security, then click 2-Step Verification and make sure it's OFF (if you don't do this, the next step won't even be an option).

5) Set "less secure app access" ON.

6) Re-add the account(s) from System Preferences > Internet Accounts.

7) Launch the Mail app - the account(s) should sync.

I have 2 personal Google accounts. One is ok and the other is dead. When I try to add it again, the email comes wrong and nothing works.

What I do: add Gmail manually, add Google Contacts manually and both works. But I've tried several ways to add Google through CalDav and doesn't works.

Someone knows how to add Google Calendar account manually?

Thanks for some help!