diff --git a/package.json b/package.json
index e2dcb9481..ed2755689 100644
--- a/package.json
+++ b/package.json
@@ -9,16 +9,17 @@
     "bunyan-cloudwatch": "2.0.0",
     "bunyan-loggly": "^1.0.0",
     "bunyan-prettystream": "^0.1.3",
+    "imap": "0.8.x",
     "lerna": "2.0.0-beta.23",
     "mysql": "^2.11.1",
     "newrelic": "^1.28.1",
     "pm2": "^1.1.3",
+    "promise.prototype.finally": "^1.0.1",
     "redis": "2.x.x",
     "rx": "4.x.x",
     "sequelize": "3.x.x",
     "underscore": "1.x.x",
-    "utf7": "https://github.com/truebit/utf7/archive/1f753bac59b99d93b17a5ef11681e232465e2558.tar.gz",
-    "imap": "0.8.x"
+    "utf7": "https://github.com/truebit/utf7/archive/1f753bac59b99d93b17a5ef11681e232465e2558.tar.gz"
   },
   "devDependencies": {
     "babel-eslint": "6.x",
diff --git a/packages/nylas-api/app.js b/packages/nylas-api/app.js
index 8199a9687..2dc1e9d28 100644
--- a/packages/nylas-api/app.js
+++ b/packages/nylas-api/app.js
@@ -11,7 +11,6 @@ const fs = require('fs');
 const path = require('path');
 const {DatabaseConnector, SchedulerUtils, Logger} = require(`nylas-core`);
 
-global.Promise = require('bluebird');
 global.Logger = Logger.createLogger('nylas-k2-api')
 
 const onUnhandledError = (err) => global.Logger.fatal(err, 'Unhandled error')
diff --git a/packages/nylas-core/imap-connection.js b/packages/nylas-core/imap-connection.js
index 2b002e048..4132cf140 100644
--- a/packages/nylas-core/imap-connection.js
+++ b/packages/nylas-core/imap-connection.js
@@ -3,6 +3,7 @@ const _ = require('underscore');
 const xoauth2 = require('xoauth2');
 const EventEmitter = require('events');
 
+const PromiseUtils = require('./promise-utils')
 const IMAPBox = require('./imap-box');
 const {
   convertImapError,
@@ -87,7 +88,7 @@ class IMAPConnection extends EventEmitter {
 
   _buildUnderlyingConnection(settings) {
     return new Promise((resolve, reject) => {
-      this._imap = Promise.promisifyAll(new Imap(settings));
+      this._imap = PromiseUtils.promisifyAll(new Imap(settings));
 
       // Emitted when new mail arrives in the currently open mailbox.
       // Fix https://github.com/mscdex/node-imap/issues/445
diff --git a/packages/nylas-core/index.js b/packages/nylas-core/index.js
index 431eed10a..b6348ddd4 100644
--- a/packages/nylas-core/index.js
+++ b/packages/nylas-core/index.js
@@ -1,5 +1,3 @@
-global.Promise = require('bluebird');
-
 module.exports = {
   Provider: {
     Gmail: 'gmail',
@@ -13,4 +11,5 @@ module.exports = {
   MessageTypes: require('./message-types'),
   Logger: require('./logger'),
   Errors: require('./imap-errors'),
+  PromiseUtils: require('./promise-utils'),
 }
diff --git a/packages/nylas-core/promise-utils.js b/packages/nylas-core/promise-utils.js
new file mode 100644
index 000000000..d0114b34d
--- /dev/null
+++ b/packages/nylas-core/promise-utils.js
@@ -0,0 +1,50 @@
+require('promise.prototype.finally')
+const _ = require('underscore')
+
+function sleep(ms) {
+  return new Promise((resolve) => setTimeout(resolve, ms))
+}
+
+function each(iterable, iterator) {
+  return Promise.resolve(iterable)
+  .then((iter) => Array.from(iter))
+  .then((array) => {
+    return new Promise((resolve, reject) => {
+      array.reduce((prevPromise, item, idx, len) => (
+        prevPromise.then(() => Promise.resolve(iterator(item, idx, len)))
+      ), Promise.resolve())
+      .then(() => resolve(iterable))
+      .catch((err) => reject(err))
+    })
+  })
+}
+
+function promisify(nodeFn) {
+  return function wrapper(...fnArgs) {
+    return new Promise((resolve, reject) => {
+      nodeFn.call(this, ...fnArgs, (err, ...results) => {
+        if (err) {
+          reject(err)
+          return
+        }
+        resolve(...results)
+      });
+    })
+  }
+}
+
+function promisifyAll(obj) {
+  for(const key in obj) {
+    if (!key.endsWith('Async') && _.isFunction(obj[key])) {
+      obj[`${key}Async`] = promisify(obj[key])
+    }
+  }
+  return obj
+}
+
+module.exports = {
+  each,
+  sleep,
+  promisify,
+  promisifyAll,
+}
diff --git a/packages/nylas-core/pubsub-connector.js b/packages/nylas-core/pubsub-connector.js
index 36121688a..fc5ff8bba 100644
--- a/packages/nylas-core/pubsub-connector.js
+++ b/packages/nylas-core/pubsub-connector.js
@@ -1,9 +1,10 @@
 const Rx = require('rx')
 const redis = require("redis");
+const PromiseUtils = require('./promise-utils')
 const log = global.Logger || console
 
-Promise.promisifyAll(redis.RedisClient.prototype);
-Promise.promisifyAll(redis.Multi.prototype);
+PromiseUtils.promisifyAll(redis.RedisClient.prototype);
+PromiseUtils.promisifyAll(redis.Multi.prototype);
 
 
 class PubsubConnector {
diff --git a/packages/nylas-core/scheduler-utils.js b/packages/nylas-core/scheduler-utils.js
index 9b719f0ba..41711ca71 100644
--- a/packages/nylas-core/scheduler-utils.js
+++ b/packages/nylas-core/scheduler-utils.js
@@ -8,12 +8,13 @@ const HEARTBEAT_EXPIRES = 30; // 2 min in prod?
 
 const CLAIM_DURATION = 10 * 60 * 1000; // 2 hours on prod?
 
+const PromiseUtils = require('./promise-utils')
 const PubsubConnector = require('./pubsub-connector');
 const MessageTypes = require('./message-types')
 
 const forEachAccountList = (forEachCallback) => {
   const client = PubsubConnector.broadcastClient();
-  return Promise.each(client.keysAsync(`accounts:*`), (key) => {
+  return PromiseUtils.each(client.keysAsync(`accounts:*`), (key) => {
     const processId = key.replace('accounts:', '');
     return client.lrangeAsync(key, 0, 20000).then((foundIds) =>
       forEachCallback(processId, foundIds)
diff --git a/packages/nylas-dashboard/app.js b/packages/nylas-dashboard/app.js
index 0284429ae..95eddfb30 100644
--- a/packages/nylas-dashboard/app.js
+++ b/packages/nylas-dashboard/app.js
@@ -5,7 +5,6 @@ const Hapi = require('hapi');
 const HapiWebSocket = require('hapi-plugin-websocket');
 const {Logger} = require(`nylas-core`);
 
-global.Promise = require('bluebird');
 global.Logger = Logger.createLogger('nylas-k2-dashboard')
 
 const server = new Hapi.Server();
diff --git a/packages/nylas-message-processor/app.js b/packages/nylas-message-processor/app.js
index 4ad7aee14..73e4950f5 100644
--- a/packages/nylas-message-processor/app.js
+++ b/packages/nylas-message-processor/app.js
@@ -1,7 +1,6 @@
 const {PubsubConnector, DatabaseConnector, Logger} = require(`nylas-core`)
 const {processors} = require('./processors')
 
-global.Promise = require('bluebird');
 global.Logger = Logger.createLogger('nylas-k2-message-processor')
 
 // List of the attributes of Message that the processor should be allowed to change.
diff --git a/packages/nylas-sync/app.js b/packages/nylas-sync/app.js
index 16bf4509f..03b04d92d 100644
--- a/packages/nylas-sync/app.js
+++ b/packages/nylas-sync/app.js
@@ -1,5 +1,4 @@
 // require('newrelic');
-global.Promise = require('bluebird');
 const {DatabaseConnector, Logger} = require(`nylas-core`)
 const SyncProcessManager = require('./sync-process-manager');
 
diff --git a/packages/nylas-sync/imap/fetch-messages-in-folder.js b/packages/nylas-sync/imap/fetch-messages-in-folder.js
index 038ae281b..2f3be4cbe 100644
--- a/packages/nylas-sync/imap/fetch-messages-in-folder.js
+++ b/packages/nylas-sync/imap/fetch-messages-in-folder.js
@@ -1,7 +1,7 @@
 const _ = require('underscore');
 const Imap = require('imap');
 
-const {IMAPConnection, PubsubConnector} = require('nylas-core');
+const {IMAPConnection, PubsubConnector, PromiseUtils} = require('nylas-core');
 const {Capabilities} = IMAPConnection;
 
 const MessageFlagAttributes = ['id', 'folderImapUID', 'unread', 'starred', 'folderImapXGMLabels']
@@ -113,12 +113,12 @@ class FetchMessagesInFolder {
     const {Message} = this._db;
 
     const removedUIDs = localMessageAttributes
-      .filter(msg => !remoteUIDAttributes[msg.folderImapUID])
-      .map(msg => msg.folderImapUID)
+    .filter(msg => !remoteUIDAttributes[msg.folderImapUID])
+    .map(msg => msg.folderImapUID)
 
-      this._logger.info({
-        removed_messages: removedUIDs.length,
-      }, `FetchMessagesInFolder: found messages no longer in the folder`)
+    this._logger.info({
+      removed_messages: removedUIDs.length,
+    }, `FetchMessagesInFolder: found messages no longer in the folder`)
 
     if (removedUIDs.length === 0) {
       return Promise.resolve();
@@ -176,7 +176,7 @@ class FetchMessagesInFolder {
       uidsByPart[key].push(attributes.uid);
     })
     .then(() => {
-      return Promise.each(Object.keys(uidsByPart), (key) => {
+      return PromiseUtils.each(Object.keys(uidsByPart), (key) => {
         const uids = uidsByPart[key];
         const desiredParts = JSON.parse(key);
         const bodies = ['HEADER'].concat(desiredParts.map(p => p.id));
@@ -329,7 +329,7 @@ class FetchMessagesInFolder {
       }
     }
 
-    return Promise.each(desiredRanges, ({min, max}) => {
+    return PromiseUtils.each(desiredRanges, ({min, max}) => {
       this._logger.info({
         range: `${min}:${max}`,
       }, `FetchMessagesInFolder: Fetching range`);
@@ -343,7 +343,8 @@ class FetchMessagesInFolder {
           timeFetchedUnseen: Date.now(),
         });
       })
-    }).then(() => {
+    })
+    .then(() => {
       this._logger.info(`FetchMessagesInFolder: Fetching messages finished`);
     });
   }
diff --git a/packages/nylas-sync/sync-process-manager.js b/packages/nylas-sync/sync-process-manager.js
index d1ee98c9f..c7eb423cc 100644
--- a/packages/nylas-sync/sync-process-manager.js
+++ b/packages/nylas-sync/sync-process-manager.js
@@ -1,6 +1,6 @@
 const os = require('os');
 const SyncWorker = require('./sync-worker');
-const {DatabaseConnector, PubsubConnector, SchedulerUtils} = require(`nylas-core`)
+const {DatabaseConnector, PubsubConnector, SchedulerUtils, PromiseUtils} = require(`nylas-core`)
 
 const IDENTITY = `${os.hostname()}-${process.pid}`;
 
@@ -110,12 +110,13 @@ class SyncProcessManager {
 
     this._logger.info("ProcessManager: Starting unassignment for processes missing heartbeats.")
 
-    Promise.each(client.keysAsync(`${ACCOUNTS_CLAIMED_PREFIX}*`), (key) => {
+    PromiseUtils.each(client.keysAsync(`${ACCOUNTS_CLAIMED_PREFIX}*`), (key) => {
       const id = key.replace(ACCOUNTS_CLAIMED_PREFIX, '');
       return client.existsAsync(HEARTBEAT_FOR(id)).then((exists) =>
         (exists ? Promise.resolve() : this.unassignAccountsAssignedTo(id))
       )
-    }).finally(() => {
+    })
+    .finally(() => {
       const delay = HEARTBEAT_EXPIRES * 1000;
       setTimeout(() => this.unassignAccountsMissingHeartbeats(), delay);
     });
@@ -165,7 +166,7 @@ class SyncProcessManager {
 
       // If we've added an account, wait a second before asking for another one.
       // Spacing them out is probably healthy.
-      return Promise.delay(2000);
+      return PromiseUtils.sleep(2000);
     });
   }