Major release focused on Graph API stability and performance,
implemented folder delta sync with caching for efficient IMAP synchronization,
also added Distribution list support, improved recurrence handling on events including per-instance meeting response.
Reworked attendee and organizer, shared calendar and exception occurrences handling in EWS backend.
Introduced a new read-only mode (davmail.caldavReadonly) for calendars, fixed timezone and phone number mappings.
Graph
- Graph: implement maximum retry count on throttling
- Graph: in executeGraphRequest rebuild request on retry
- Graph: replace convertTimezoneFromExchange with DateUtil.getTimeZone
- Graph: refactor convertUntilToEndDate to use DateUtil.convertDate, implement test for conversion
- Graph: refactor date conversion methods buildUntilDate and convertOriginalStartDate
- Graph: more date refactoring on originalStartTimeZone conversion
- Graph: refactor isItemId to reuse compiled regex pattern
- Graph: some more refactoring and cleanup, make sure throttling is detected on paging requests
- Graph: remove responseTypeToPartstatMap in favor of responseTypeToPartstat method
- Graph: nextLink must not be reencoded, replaces all other GraphRequestBuilder inputs
- Graph: prepare delta synchronization, introduce deltaLink retrieval in GraphIterator
- Graph: implement maxPageSize and deltaToken parameters in GraphRequestBuilder
- Graph: implement getDeltaLink to retrieve current delta link value on folder, based on
IMAP_MESSAGE_DELTA_ATTRIBUTES and getMessage to retrieve a message by id
- Graph: unit test for delta sync
- Graph: introduce refreshMessages to prepare delta sync
- Graph: initial implementation of folder delta sync support, enable with
davmail.graph.deltaSync=true
- Graph: set both size limit ($top) and max page size (odata.maxpagesize) in searchMessages, log
item count in fetchNextPage
- Graph: implement full folder caching on top of delta sync, based on ConcurrentHashMap and
ReentrantLock
- Graph: improve recurrence handling, firstDayOfWeek is required for weekly patterns in Graph
- Graph: add missing datereceived mapping for receivedDateTime
- Graph: log Acquire lock on folder
- Graph: always return false in isExpired as access token is automatically refreshed
- Graph: switch delta sync on by default
- Graph: detect meeting response with missing event, abort to avoid creating an invalid duplicate
event
- Graph: document davmail.graph.deltaSync in reference davmail.properties, even if it's now enabled
by default
- Graph: Handle HttpTokenExpiredException error code with a specific exception
- Graph: switch contact description field to personalNotes instead of 0x1000 MAPI property
- Graph: add a test case on contact personalNotes
- Graph: fix delta sync test case
- Graph: refactor attendees status / send meeting response to properly handle individual occurrences
response status update
- Graph: even more strict check on meeting response with missing event
- Graph: adjust recursive multicondition handling to detect inner empty conditions, map
personalnotes to standard field and separate description field
- Graph: cleanup and avoid loop in getVTimezone
- Graph: restore isExpired check, helps detect network down issues before trying to actually calling
graph
- Graph: cleanup partstatToResponseMap, remove unused map
- Graph: review attributes retrieved on messages, drop changeKey, messageheaders,
outlookmessageclass, should help with https://github.com/mguessan/davmail/issues/509
- Graph: improve delta sync logging
- Graph: improve getSubFolderByName logging
- Graph: prepare distributionlist implementation
- Graph: initial distribution list implementation, retrieve VCARD entries with members as
KIND:group
- Graph: implement distribution list lifecycle (create/update/delete), assume client takes into
account returned item name
- Graph: review distribution list attribute mapping to match EWS, and workaround for bug on the
distribution list beta endpoint
- Graph: make sure message count matches current list count
- Graph: add missing Calendars.ReadWrite.Shared scope to access shared folders over graph
- Graph: refactor task implementation to insert a TODO. prefix in item name and avoid not found /
failover logic
- Graph: fix searchTasksOnly, return empty list on shared folders
- Graph: switch DateUtil to use java.time, make sure day is lower case
- Graph: experimental recurrence support on todo items, fix TODO. based itemId implementation
- Graph: fix https://github.com/mguessan/davmail/issues/515 Graph + O365DeviceCode: with
davmail.enableOidc unset,
device code requested on v1 endpoint but redeemed on v2 — no refresh_token, "Exception parsing
token"
- Graph: refactor event search to return minimal information by default, but full event content on
timerange search,
fix for https://github.com/mguessan/davmail/issues/514
- Graph: do not search for tasks in shared folders
- Graph: build imapFlagMap as part of loadMessages/computeAttributes to avoid
ConcurrentModificationException on
multiple connections to same folder
- Graph: move computeAttributes to critical section to ensure imapFlagMap is properly refreshed
- Graph: protect against potential npe when extracting alias
- Graph: protect against potential npe in isMainCalendar and isMainContactFolder methods
- Graph: make urlcompnameToIdMap and folderIdCach thread safe
- Graph: handle malformed Retry-After header
- Graph: avoid potential npe in executeJsonRequest and executeGraphRequest methods
- Graph: adjust previous patch, make sure JsonResponseHandler never returns null
- Graph: improve error logging
- Graph: replace 102, 103, 104 with MAPI constants defined in ExchangeSession
- Graph: simplify GraphIterator, remove dead code
- Graph: introduce constants for 261, 262 replied and forwarded icons
- Graph: fix another edge case on search for shared tasks
- Graph: fix regression on urlcompnameToIdMap, id is null on meeting response and ConcurrentHashMap
cannot store null values
- Graph: merge https://github.com/mguessan/davmail/pull/517 keep origin of appended messages (date,
Received, threading, read flag)
- Graph: add unit test for https://github.com/mguessan/davmail/pull/517 keep origin of appended
messages (date, Received, threading, read flag)
- Graph: fix DavMailAuthenticationException check in O365Token, fail when Mail.ReadWrite is missing
instead of EWS.AccessAsUser.All present, see https://github.com/mguessan/davmail/issues/518
- Graph: fix https://github.com/mguessan/davmail/issues/519, property return well known folder id
for deleted items
- Graph: fix https://github.com/mguessan/davmail/issues/518 skip empty condition to avoid invalid
filter
EWS
- EWS: apply isItemId refactoring to EWS
- EWS: reimplement recursive search with deep folder traversal, based on user contribution, see
https://sourceforge.net/p/davmail/patches/60/
- EWS: apply missing event over EWS, abort to avoid creating an invalid duplicate event
- EWS: port new individual occurrence meeting response to EWS, also drop the davmailtemp logic that
is no longer working (create timezone event in normal calendar)
- EWS: map uid in default contact attributes
- EWS: do not try to erase uid on update
- EWS: convert user provided timezone id to Exchange
- EWS: do not try to force PARTSTAT when building attendees, use Exchange provided value
- EWS: Exchange does not properly build attendees on exception occurrences, it does not provide
organizer either, rebuild both, see https://github.com/mguessan/davmail/issues/493
- EWS: make sure the organizer information is also retrieved on master event
- EWS: set folder type based on folderClass, adjust contact creation status handling, return null on
empty contact
photo retrieval, do not try to retrieve photo from AD with empty email
- EWS: prepare getResponseItemFieldValue method to simplify code
- EWS: impersonate only when caldavImpersonate is set, see
https://github.com/mguessan/davmail/issues/512
- EWS: When sending a meeting response on a shared calendar, ensure we impersonate shared mailbox,
see https://github.com/mguessan/davmail/issues/512
- EWS: Exchange does not properly set organizer property on shared calendars and exception
occurrences, fix for https://github.com/mguessan/davmail/issues/512
- EWS: get rid of davmail.caldavImpersonate setting and improve meeting management logging
- EWS: change approach on attendees, do not trust Exchange created attendees, rebuild from EWS item
information
- EWS: more logging on attendee status management
O365
- O365: fix scope check in O365Token, avoid resetting token when scope is null, see
https://sourceforge.net/p/davmail/bugs/751/
- O365: remove main method from O365InteractiveAuthenticator now that we have the -token command
line option to check embedded browser interaction
- O365: UnknownException means network is down in O365 refresh token handling
- O365: move multicondition logic back to ExchangeSession
- O365: make the decrypt token error more explicit, it's often a mismatch in passwords between
CalDAV/CardDAV/IMAP clients
- O365: send DavMailException instead of generic IOException on token parsing error
- O365: force reauthentication after switching from EWS to Graph
CalDAV
- Caldav: review error handling, report 400 error codes to client instead of generic error
- Caldav: remove duplicate replaceIcal4Principal method
- Caldav: fix potential null pointer in VCalendar.isCurrentUser()
- CalDAV: add missing Europe/Amsterdam timezone mapping
- CalDAV: review and add additional missing timezone mappings
- Caldav: implement DavMail side Caldav read-only mode with davmail.caldavReadonly=true, see
https://github.com/mguessan/davmail/issues/146
- Caldav: review phone numbers mapping to support otherHomePhone and otherBusinessTelephoneNumber
- Caldav: Remove obsolete TestCaldav unit tests
- Caldav: fix America/Bahia timezone mapping, see https://github.com/mguessan/davmail/issues/508
- Caldav: additional timezone mapping fixes
- CalDAV: properly detect and handle empty credentials
- CalDAV: fix searchTasksOnly on main calendar, should lookup in tasks folder, see
https://github.com/mguessan/davmail/issues/511
- CalDav: fix https://github.com/mguessan/davmail/issues/511, warn if start date is after due date,
ignore value for DTSTART
- Caldav: exclude distribution lists for Thunderbird, not yet supported
- Caldav: fix for https://github.com/mguessan/davmail/issues/513, missing VCalendar version
property
- Caldav: improve log message when client requests non itemId based item name
CardDAV
- CardDAV: adjust test case for Graph
- CardDAV: refactor TestExchangeSessionContact unit tests
- Carddav: drop urlcompname (client provided item name) for contacts, prefer more reliable id,
adjust personalNotes case
Build
- Build: exclude OpenJFX based interactive authentication only, SWT is still available
- Build: review debian javafx flag
- Build: switch Sonar scan to JDK25 in AppVeyor build script
- Build: fix javafx path in appveyor
- Build: fix appveyor javafx path check
- Build: adjust jacoco.xml path to match Sonar configuration
- Build: set sonar.java.test.binaries
- Build: remove woodstox StreamScanner exclusion from sonar configuration, we no longer provide a
patched version of this class
Documentation
- Doc: fix getting started link in README.md
- Doc: add a SECURITY.md security policy
- Doc: additional README enhancements
- Doc: improve README with getting started and What's new sections
- Doc: improve README, fix url and add reference to license
- Doc: Remove remaining Mac OS X references
- Doc: update download instructions and remove outdated links
- Doc: update donation link
- Doc: fix Download page
- Doc: Review DavMail description in appdata.xml for clarity
- Doc: Update debian package description
- Doc: Update project description on POM
Enhancements
- Remove IllegalArgumentException from URIUtil
- Switch to curl user agent for version check, not blocked by Sourceforge
- Implement davmail.logConnectionFilePath to send connection logs to a separate file
- Refactor DavMailIdleConnectionEvictor to avoid CPU spike waking up from sleep/hibernate, use
scheduleWithFixedDelay instead of fixedRate
- Log backend and authentication modes on startup
Linux
- Linux: improve security, create token file with private permissions
Test
- Test: use a separate test.properties file to provide credentials for unit tests
- Test: drop obsolete SSL socket factory
- Test: Additional testcase
- Test: DateUtilTest test cases
- Test: cleanup unit tests
- Test: fetch jacoco report
- Test: adjust target path for jacoco.xml download
- Test: cleanup old test case code
- Test: prepare automatic switch to ExchangeEWS mode
- Test: Add O365EWS contact tests
- Test: Adjust CardDav unit tests
- Test: Add EWS test to jacoco coverage report
- Test: update contact test case
- Test: additional IMAP test cases
- Test: include TestImap in jacoco report
- Test: Review calendar unit tests
- Test: add TestExchangeSessionCalendar to jacoco report
- Test: additional contact unit test on distribution list
- Test: force default unit tests to use O365Graph mode
- Test: Additional test case on searching shared tasks through calendar
- Test: Adjust testGetDayOfWeek to latest format change in DateUtil
- Test: review SMTP unit tests
