Sync contacts between Microsoft Exchange Web Services (EWS) and countless other apps

Connect peers and partners to people, data and business opportunities more easily with the Microsoft Exchange Web Services (EWS) API. Exchange-Webdienste delivers a platform-agnostic API that lets applications access mailboxes, messages, appointments and contacts from Exchange Online or any other version of Microsoft's on-premises email systems like Exchange Server 2010. With EWS developers can innovate by integrating documents (such as contracts), content repositories (collaboration tools such as SharePoint), analytic engines (like Power BI) or line-of-business apps into their product environments all via rich RESTful interactions. Automatically processing outside events, these APIs also enable integrations across platforms through policy and permission changes without touching your production servers - leveling
App is available.

Sync contacts between Microsoft Exchange Web Services (EWS) and other apps like:

AGFEO
AGFEOtel
Android
Apple iCloud
Apple iOS
Apple iPhone
Apple macOS
Apple OSX
Asterisk
AVM FRITZ!Box
CardDAV
corpoTel
DATEV
Deutsche Telefon Tk-Anlage CentrexX
DocBee
Gigaset
Google Contacts
Google GMail
Google Nexus
Google Pixel
GSuite
HubSpot
INOPLA
LDAP
Microsoft 365
Microsoft 365 Shared Mailbox
Microsoft Active Directory
Microsoft Dynamics 365
Microsoft Exchange Global Address List (GAL)
Microsoft Graph API
Microsoft Office 365
Microsoft Outlook
Microsoft Teams
Mozilla Thunderbird
MyCRM
NFON
o2 digital phone
Pascom
PhoneSuite
Pipedrive
Placetel
salesforce
Sipgate
snom
STARFACE
SugarCRM
UCware
Unify
weclapp
XELION
Yealink
Zendesk
Zoho