DavMail Released Version 7.0.0 with Graph API Focus
The latest release shifts the protocol-translation software to Microsoft Graph, prioritizing efficiency in data syncs.
Updated on Sept. 22, 2026 in Data Centers
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DavMail 7.0.0 has been released as a stable update that transitions the software’s primary backend interface from Exchange Web Services to the Microsoft Graph API. The update introduces folder delta synchronization as a default setting to optimize performance.
Why it matters
This shift accelerates the integration between open protocols and modern Microsoft cloud environments by prioritizing the newer API over the legacy EWS interface. By focusing development on Graph, the project aims to maintain compatibility with evolving enterprise infrastructure.
DavMail 7.0.0 includes 70 changelog entries for Microsoft Graph updates compared to 18 for legacy Exchange Web Services. The release implements folder delta sync by default, which fetches only changed items from the server rather than performing full synchronization.
The players
DavMail
An open-source project that provides a gateway to exchange mail, calendar, and address book data via standard internet protocols.
Microsoft Graph
The primary RESTful API used to access data, relationships, and intelligence across the Microsoft 365 cloud platform.
The details
DavMail functions as a gateway that converts open protocols—such as IMAP, SMTP, CalDAV, CardDAV, and LDAP—into Microsoft Exchange requests. Version 7.0.0 requires a fresh sign-in when transitioning from the older EWS, an acronym for Exchange Web Services, to the Graph API. Additionally, the software now returns distribution lists to clients as contact groups and introduces a read-only calendar mode via the configuration toggle davmail.caldavReadonly.
Timeline
September 22, 2026: DavMail 7.0.0 was released to the public.
The Tech Race
This release marks a comprehensive transition to the Microsoft Graph API, aligning the project with modern standards for cloud-based data access. It follows a industry-wide trajectory of deprecating older Exchange Web Services in favor of the more performant Graph environment.
Users upgrading to version 7.0.0 must perform a fresh sign-in to authenticate their connection with the Microsoft Graph backend. This update effectively replaces legacy EWS synchronization workflows, requiring manual adjustment to configuration files if specific deprecated settings were previously in use.
The takeaway
The move to Microsoft Graph standardizes how DavMail handles exchange requests, significantly reducing overhead for users managing mail and calendar data. Developers and system administrators should audit their configurations for the removed davmail.caldavImpersonate option to ensure service continuity.
Further reading
For broader trends in managing infrastructure connectivity, see Data Centers.
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