Office 365

Office 365 is Microsoft’s App suite and cloud collaboration tool. This platform includes Office Online, OneDrive and is a personal email service with a modern and intuitive interface, keeping your emails tidy and your contacts up to date by linking with Social Media such as Facebook and Twitter. Important integrations, such as with Skype and the Windows phone, make it easy to switch to a call with one of your Office 365 contacts and make changes on the go. Find out here how to use these native integrations to your benefit while using PieSync, we also have an interesting read on our blog about this!

You can switch fluidly between and the rest of the Office 365 suite, similar to Google Apps. For each Office 365 app, you use the same contacts, stored in the Microsoft People App which is also part of this suite and comparable with Google Contacts.

Important: We only sync contacts from migrated accounts with the new Office 365 interface: The migration to the new Office 365 interface from old Microsoft accounts (such as Hotmail, Live, Msn and previous Outlook) is done in waves by Microsoft. Migrated accounts use the REST API, which is the one PieSync needs to connect to Office 365 We suggest getting in touch with Microsoft support to get yours migrated if that's not yet the case.

We sync with Outlook 365, which is the cloud-based version of outlook. Please check if your local Outlook is in sync with Outlook 365. You can check this by going to and see if your local outlook contacts are there. If they are not the sync is not possible as we don't sync with MS Exchange servers at the moment.

UPDATE (1): Microsoft tweeted that all old accounts will be moved to the new one by the end of summer 2016.
UPDATE (2): This Microsoft-hosted support article will tell if you have been migrated.

Due to different API’s we don’t sync with following Microsoft accounts:

  • Microsoft Exchange Accounts
  • Non-Migrated accounts (Hotmail/Live/Msn or no REST API)
  • GAL (Global Address Lists)

Start saving time and set up a connection with one of your favorite apps.



We need permission to access both your accounts, this is necessary to keep your accounts in sync. 

For Office365, we need you to log in to your account and allow access to a certain Folder. When you click 'Authorize Office365', a pop-up window appears to log in and then another window that visualizes the folders to choose from. 

Why do I need to authorize each subset of my Office365 contacts?

How does this translate when setting up Multiple Rules: OPTION 1

How does this translate when setting up Multiple Rules: OPTION 2 

Don't worry, though, we treat your data securely with absolute confidentiality!


For each step in the configuration, we have a separate help article available in the PieSync Help Centre. For ease of reference, we linked them in the subtitles below. 


Choose the filter for each app to define the subset of contacts you want to keep in sync. Setting up more than one rule is available from the Medium plan onward.

For Office365, authorization is required per folder subset. Therefore, this already happens in the Authorization Step as described above. 

Keep in mind some important side notes in regards to the availability of Multiple Rules. Want to set up more than one rule? Check out here how to do this!

Once you have chosen your filter(s), you can continue with the rest of the configuration as described in the steps below. Bear in mind that not all steps/features are available in each connection.  Don't hesitate to drop us a line at in case you have further questions!


In between your filters you are able to choose the direction of your sync in the drop-down menu. Choose to sync two-way or one-way in either direction.


Only syncing contacts with an email address, as this is the field we use to match your contacts. This feature is optional when configuring 'older' connections, you'll be able to tick or untick the box. For newer ones, this is mandatory, just to make sure you're always protected from duplicates (don't we all hate them!). If you do wish to turn off this feature, just give us a shout at Don't worry, we will always advise first on how best to proceed!


The availability of these features is app and connection dependent. If the boxes are not there to tick, the features are simply not available. We need to be able to detect deletions and/or unsubscribes on one side and at the same time be able to create a tag/group/list/... named 'PieSync Trash' or 'PieSync Unsubscribes' on the other side. When available, we always explain how and in which direction this feature works for that particular connection.

Syncing Unsubscribes or Syncing Deletions is not available in all connections. 

3.5) CHOOSE YOUR MASTER APP (When conflicting change is detected)

We need you to choose the 'winning app' in case PieSync detects conflicting changes. PieSync detects changes on a field level: Chances of having a conflict are very small; only when two people are updating the same field of the same contact, in different applications at the same time, with conflicting information, there is a conflict (phew, we hope you survived that sentence as well)! On the rare occasion, when a conflict does occur, PieSync will take the value of the master application.

During the initial sync, when we match your databases based on the email address field, we will also use your Master App choice when there's a difference on another field level. Don't worry, when your master app has empty fields, we won't delete any field information in the other app.


When you have a connection setup with Google Contacts, you can additionally sync your contacts to the Google Contacts group 'My Contacts’. This feature is especially useful for iPhone users, as your iPhone contacts get synced to 'my contacts' in Google by default.

This Feature is only available in connections with Google Contacts. 


This part in the configuration shows you the default fields we currently keep in sync and how we map them between the two apps you have connected. 


This feature allows you to create custom mappings, defining which contact fields should be kept in sync between your applications, including standard and custom fields (Office365 does not support custom fields)

Office365 is not part of the first wave of the Customizable Field Mapping roll-out, stay tuned as it will become available soon! 

The customizable field mapping is set up and shown in the white part below the default field mapping in the configuration. You can add an unlimited amount of mappings and remove, enable/disable them anytime.


Make sure no other integrations are running next to PieSync for the accounts you have connected in PieSync. Other integrations will have access to your data and have the ability to manipulate as well. For this reason, we kindly ask you to use PieSync and nothing else to keep your data in sync. Other integrations running in parallel with PieSync are a no-go!

In case you have a lot of contacts in your applications, the initial sync will take some time, even if you configured PieSync only to sync a subset of your contacts. During the initial scan, we need to process all of your contacts (also the contacts outside the chosen subset) to avoid duplicates during the sync. After the initial sync, it should never take much longer than five minutes for updates to show.

Once your connection is active, PieSync works in the background. If you're curious, you can log in and see on the dashboard what has been syncing the last 24 hours. Here below you see an example of how this is visualized.

5) Office365 - Office365 SYNC

In Office 365, there's no option to drag contacts to another folder. You can only add new contacts to a folder from scratch or import/export contacts to and from another database. This way, if you have two bi-directional syncs set up: E.g. 2 Google Contacts Groups and 2 Office 365 folders, and you drag a contact over to another group in Gmail, this change won’t happen in the folders on the Office 365 platform, because this change simply isn’t a possibility in Outlook.

Then we step in! We also support the Office 365 ↔ Office 365 connection: This enables the possibility to drag over contacts from one folder to another with PieSync in one Office 365 account. 

Thanks to the feedback we have already received, we created a list of popular apps that we’re going to work on very soon. By voting them up in our pipeline, YOU decide which connectors we’ll release first. If you don’t see your app on the list or need any further help, drop us a line - 

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