Gmail API — Gmail Engine

Gmail API Connected

1 OAuth app(s) registered · 2 / 100 sender slots used

Registered OAuth Apps

New sender connections are auto-apportioned to the app with the most free slots

Name	Client ID	Used	Limit
Default	217859097084-046kq…tent.com	2	100

Safe to add/remove anytime. Existing senders store their own credentials and keep sending normally. Removing an app only stops it from being used for new connections.

How to Get Credentials

Google Cloud Console setup guide

Go to Google Cloud Console → APIs & Services → OAuth consent screen. Create or verify your app.

Go to Credentials → Create Credentials → OAuth client ID. Select Web application.

Under Authorised redirect URIs, add exactly: http://localhost:8080/oauth/callback

Click Download JSON. Upload that file here.

Enable the Gmail API in APIs & Services → Library for your project.

Add OAuth App

Upload a credentials.json from Google Cloud Console

Name (optional)

Max Connections

Drop credentials.json here or click to browse

JSON file from Google Cloud Console

OR PASTE JSON

Paste credentials JSON

Apportioned automatically. Each connected Gmail account stores its own credentials independently. New senders are connected through whichever registered app has the most free slots.

← Back to Senders

Domain & SSL Setup

Point your domain to this VPS, then click Setup to install a free SSL certificate

HTTPS ACTIVE

Live App URL

https://mailengine.online

OAuth Redirect URI — add this in Google Cloud Console

          https://mailengine.online/oauth/callback
        

After SSL is set up, update your Google Cloud Console Authorized Redirect URI from the HTTP to the HTTPS version.