diff --git a/.gitignore b/.gitignore
index c8cf125..e15c669 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,3 +59,6 @@ docs
 
 .nyc_output
 coverage
+
+# common config file.
+common.js
diff --git a/bin/iredmail.js b/bin/iredmail.js
new file mode 100644
index 0000000..ccca338
--- /dev/null
+++ b/bin/iredmail.js
@@ -0,0 +1,45 @@
+/*
+  A class for connecting to and controlling the postgres database of an iredmail
+  email server.
+*/
+
+'use strict'
+
+const Sequelize = require('sequelize')
+const config = require('../config')
+
+// Models
+const UsedQuota = require('../postgres/models/used-quota')
+
+class IRedMail {
+  constructor () {
+    // Instantiate and initialize sequelize.
+    this.sequelize = this.initSequelize()
+
+    // Load the models
+    this.models = {
+      usedQuota: new UsedQuota(this.sequelize)
+    }
+  }
+
+  // Returns an instance of the sequelize class, configured for the Postgres
+  // database defined in the config object.
+  initSequelize () {
+    return new Sequelize('vmail', config.postgresUser, config.postgresPass, {
+      host: config.postgresHost,
+      dialect: 'postgres',
+
+      pool: {
+        max: 5,
+        min: 0,
+        acquire: 30000,
+        idle: 10000
+      },
+
+      // http://docs.sequelizejs.com/manual/tutorial/querying.html#operators
+      operatorsAliases: false
+    })
+  }
+}
+
+module.exports = IRedMail
diff --git a/bin/server.js b/bin/server.js
index 2c3231a..1b47ef2 100644
--- a/bin/server.js
+++ b/bin/server.js
@@ -9,6 +9,8 @@ const mount = require('koa-mount')
 const serve = require('koa-static')
 const cors = require('kcors')
 
+const IRedMail = require('./iredmail')
+
 const config = require('../config')
 const errorMiddleware = require('../src/middleware')
 
@@ -52,10 +54,40 @@ async function startServer () {
   await app.listen(config.port)
   console.log(`Server started on ${config.port}`)
 
+  try {
+    const iRedMail = new IRedMail()
+    await iRedMail.sequelize.authenticate()
+    console.log('Connection to the iRedMail postgres database has been established successfully.')
+
+    // Attach to iRedMail instantiation to the context object.
+    app.context.iRedMail = iRedMail
+  } catch (err) {
+    console.log(`Could not connect to iRedMail instance.`)
+  }
+
   return app
 }
 // startServer()
 
+/*
+async function runTest () {
+  try {
+
+    await sequelize.authenticate()
+
+    console.log('Connection has been established successfully.')
+
+    await UsedQuota.sync()
+
+    const data = await UsedQuota.findAll()
+
+    console.log(`data: ${JSON.stringify(data, null, 2)}`)
+  } catch (err) {
+    console.log(`Error: `, err)
+  }
+}
+*/
+
 // export default app
 // module.exports = app
 module.exports = {
diff --git a/config/env/common.js b/config/env/common.js
deleted file mode 100644
index 4a03e2d..0000000
--- a/config/env/common.js
+++ /dev/null
@@ -1,7 +0,0 @@
-// export default {
-//  port: process.env.PORT || 5000
-// }
-
-module.exports = {
-  port: process.env.PORT || 5000
-}
diff --git a/config/env/min-config.js b/config/env/min-config.js
new file mode 100644
index 0000000..1e08603
--- /dev/null
+++ b/config/env/min-config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  port: process.env.PORT || 5000
+}
diff --git a/config/index.js b/config/index.js
index db7fcb9..d8e1d3a 100644
--- a/config/index.js
+++ b/config/index.js
@@ -1,6 +1,16 @@
-const common = require('./env/common')
+// Attempt to include a common.js config file, if it exists.
+let common
+try {
+  common = require('./env/common')
+} catch (err) {
+  common = require('./env/min-config')
+}
 
+// Default to development environment.
 const env = process.env.NODE_ENV || 'development'
+
+// Load the config object for the selected environment.
 const config = require(`./env/${env}`)
 
+// Merge into a single object and export.
 module.exports = Object.assign({}, common, config)
diff --git a/package.json b/package.json
index 8b3b2f6..5222802 100644
--- a/package.json
+++ b/package.json
@@ -46,8 +46,10 @@
     "koa-static": "^5.0.0",
     "mongoose": "^5.0.8",
     "passport-local": "^1.0.0",
+    "pg": "^7.8.0",
     "request": "^2.85.0",
-    "request-promise": "^4.2.2"
+    "request-promise": "^4.2.2",
+    "sequelize": "^4.42.0"
   },
   "devDependencies": {
     "chai": "^4.1.2",
diff --git a/postgres/models/used-quota.js b/postgres/models/used-quota.js
new file mode 100644
index 0000000..b8185b7
--- /dev/null
+++ b/postgres/models/used-quota.js
@@ -0,0 +1,30 @@
+/*
+  UsedQuota table in the iRedMail postgres database.
+
+  The constructor cxpects an instantiation of the sequalize class. Returns a
+  Sequelize model.
+*/
+
+'use strict'
+
+const Sequelize = require('sequelize')
+
+class UsedQuota {
+  // Expects an instantiation of the sequalize class. Returns a Sequelize model.
+  constructor (sequelize) {
+    return sequelize.define(
+      'used_quota',
+      {
+        username: { type: Sequelize.STRING, primaryKey: true },
+        bytes: Sequelize.BIGINT,
+        messages: Sequelize.BIGINT,
+        domain: Sequelize.STRING
+      },
+      {
+        timestamps: false
+      }
+    )
+  }
+}
+
+module.exports = UsedQuota