Ok, so this might be a long post but it should be easy to follow.
Log in to your Google account and open your
Google Cloud Console.
(Be sure to sign out of all other Google accounts besides the account you’ll be using for the SMTP setup.
Also, if you’re using Google Workspace, make sure that the Google account you use has permission to send emails (in other words, access to its own inbox).
If it’s your first time using Google Cloud Console, you may see a popup asking you to select your country and agree to the Terms of Service. Go ahead and do so, then click on
AGREE AND CONTINUE to move on to the next step.)
First, you’ll need to choose a project to use for your app. You can select an existing one or create a new one.
To do so, click on the projects dropdown in the toolbar at the top of your dashboard. In the popup that appears, select an existing project from the list or click on
New Project in the top right corner.
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If you use your existing app ignore the next few steps.
For a new project, enter a project name and select an organization and location from the dropdowns. Then click 'Create'
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Next, you need to enable the Gmail API for your project. In your Google Cloud Console sidebar, go to
APIs & Services » Library. (If you don’t see
APIs & Services in the sidebar, it may be found by scrolling down and clicking on
MORE PRODUCTS.)
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Enter “Gmail API” in the search bar and click on the Gmail API that shows up. You'll then be brought to the next screen where you'll ENABLE the gmail api.
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After you enable the Gmail API, you should be redirected to the Gmail API Overview page. Click on the
CREATE CREDENTIALS button in the upper right corner.
On the next page, Google will ask a few questions to determine the Credential Type you need. From the
Select an API dropdown, choose
Gmail API. Under
What data will you be accessing?, select the
User data option. Then click the
NEXT button to proceed.
Google will then ask for some basic information about your app.
This section is mostly for personal use since no one else will be using your app. However, some fields are still marked as required:
- App name: Enter an app name of your choice (e.g., Platinum Board SMTP).
- User support email: Select your email address from the choices provided.
- App logo: If you’d like, you can upload a logo for your app. This is optional.
Add your email address in the
Developer Contact Information field. Then click on the
SAVE AND CONTINUE button to proceed to the next step.
The next section will be Configuring Scopes. You can ignore this page and click
SAVE AND CONTINUE.
You’ll need to fill out some information about your OAuth Client ID.
From the
Application type dropdown, select the
Web application option. Once you do so, more fields will automatically populate. You can leave the web app name 'Web Client 1' or change it to whatever you want. It shouldn't matter.
Next, skip the
Authorized JavaScript origins section and scroll to
Authorized redirect URIs.
Click on the
+ ADD URI button and input the following:
https://theplatinumboard.com/admin.php?misc/email-oauth-setup
Then click on the
CREATE button to complete this step.
This will show you Client ID and Secret but you can ignore these for now. Hit
DONE when ready.
Google will put your app into Internal mode by default. It’s really important that you switch it to External mode and publish it. Otherwise, your app will be super limited and won’t function properly.
I think you use Google Workspace
In your Google Cloud Console sidebar, go to
APIs & Services » OAuth consent screen. Under
User type, click on the
MAKE EXTERNAL button. Select
IN PRODUCTION and click
CONFIRM.
If you’re not using Google Workspace, you won’t see the MAKE EXTERNAL option. Instead, you’ll need to publish your Google app.
To do so, go to
APIs & Services » OAuth consent screen. Under
Publishing status, you’ll see the app status is set to
Testing. Go ahead and click the
PUBLISH APP button to update your app status.
Once all of this is done, click on Credentials in the left sidebar. You see your app 'Web Client 1' or whatever you named it to, then click on the pencil icon to the right. That will pull up your Client Secret Key and Client ID you'll need in the Admin side of tPB. Enter those two keys and click continue. It should pull up that Google authorization window to ask for access. Click allow. After that I'm not sure if there are more steps but that should get you 99% of the way there.
These instructions mostly come from here if you want reference:
https://wpmailsmtp.com/docs/how-to-set-up-the-gmail-mailer-in-wp-mail-smtp/ It's specific to it's own thing but the overall set up is similar.
