Both JEC and EWSJ have the same goal, which is a smooth Java, Microsoft Exchange© Server Interoperability, they Just do it with different protocols. JEC uses Webdav, EWSJ uses EWS (Exchange Web Services).

Core Engine
• SSL/NO SSL - Connect to exchange server with or without SSL.
• FBA (Form Based Authentication) support.
• NTLM (Windows Integrated Authentication) Support.
• NTLMv2 Support.
• Kerberos Authentication Support (EWSJ 365).
• Digest Authentication support.
• Basic Authentication support.
• All operations can be performed on specific exchange folders including support for i18n folder names and public folders.
• browse folders.
• Connect via non default port to Exchange.
• Zimbra support. (See ZimbraExamples.java for all operations supported)
• Kerio support. (See KerioExamples.java for all operations supported)


EWSJ Supplements

• EWS Filters.
• EWSJ pagination support (see: getEmailsWithPagingExample() )
• NTLMv2 (Windows Integrated Authentication) Support.
• EWSJ mailbox sharing (user1 can access user2 mailbox using user1 credentials).
• EWSJ Impersonation support. (see EWSJExamples.java addEventToAnotherUserCalendarExample() ).
• PSB (Power Shell Bridge) client support (see EWSJExamples.java runRemotePowerShellScriptExample() ).
• Get User Defined (Custom) properries get support.
• Get User Defined (Custom) properries batch get support.
• User Defined (Custom) properries update support.
• User Defined (Custom) properries batch update support.
• Ability to Prefer Basic or Digest authentication (If supported by Exchange) to increase preformance (See disableNTLMAuthenticationExample() )
• Create folder support. (See createFolderExample() )
• Access resources support (see Accessing resources guide )
• Move Item support (see moveItemExample() ).
• Support for general attachment addition (to events, tasks, contacts), see example: addAttachmentsToEventExample().
• Batch delete support, see example: batchDeleteItemsExample().
• Pagination support, see example: getEmailsWithPagingExample().
• Set OOF (Out Of Office) reply support, see example: setOOFReplyExample().
• Get OOF (Out Of Office) reply support, see example: getOofReplayExample().
• get Exchange version support, see example: getExchangeVersionExample().
• Is item exists support, see example: isItemExistExample().
• Delete folder, see example: createFolderAndDeleteItExample().
• Session persistance (to speed-up 365 performance), see example: addEventWithSessionPersistanceExample().
• Delete attachment support, see example: deleteEventAttachmentExample().


JEC Supplements

• Create folder support, supporting folder types: email, calendar, task. see example: createFolderExample()
• Attachments support for all handlers.
• Set Signature support. (see setOptionsExample() ).
• Set auto-reply support (see setOptionsExample() ).
• Move Item support (see moveEmailExample() ).
• Get all items by URL (see getContactByURLExample() ).
• Get attachments info without the content support for all handlers (see: getAttachmentsInfoExample() )
• Support for soft delete and item (see softDeleteItemExample() ).

Contacts
• getContacts(...) - Get contacts from exchange, including all contact details, contacts are returned as simple DTO objects.
• addContact(...) - Create a DTO object that represents a contact, and use JEC interface to add it to exchange.
• updateContact(...) - Get a contact from exchange, update it, and apply the update on exchange server.
• getContacts(...) - Get a list of contacts from exchange
• deleteContact(...) - Delete a contact on exchange server.
• Add / update / delete Public contacts.
• Add / update / delete contacts on any sub folder.
• Sorter support, can sort on using every field (see: getContactsWithSorterExample() )
• Genearl field filtering support
. (see getContactsWithFilterExample()).
• Gal Find command support. (see galFindExample() )


JEC Supplements

• Get/Set user defined fields. see example: getContactsWithUserDefinedFieldsExample(), updateContactUserDefinedFieldExample().
• Get, Set contacts Categories. see example:getContactsExample() and addContactsExample().
• Get Attachment support.
• Contacts synchronization support: see getContactsWithLastModifiedDateFilterExample().
• Get Distribution List support (see getDistributionListExample()).
  
  EWSJ Supplements
  
• Contact filters (Search Expression).
• Sorter support.
• Resolve Name support, query into Active directory(resolveNameExample())
• Support for getting distribution lists in get Contacts.
• Support for getting MAPI fields (see: getContactExtendedFieldExample() ).
• Support for setting MAPI fields (see: setContactExtendedFieldExample() ).
• Support for Expand DL (Expand Distribution List) opetration (see: expandDLExample() ).

Calendar
• addEvent(...) - Create a DTO object that represents an event and add it to exchange, the event will appear immediately on exchange.
• getEvents(...) - Get events appearing in exchange server.
• updateEvent(...) - Get an event represented by a DTO from exchange, update it and apply the changes back to exchange.
• Delete event.
• Add event with attendees.
• Add All-day event.
• getUserAvailabilityData(...) - get User availability Data.
• Events synchronization support: see getEventsWithLastModifiedDateFilterExample()
• Get attachments support.


JEC Supplements

• sendMeetingRequest(...) - Sends a meeting request.
• acceptMeetingRequest(...) - Accepts a meeting request.
• getEventsFiltered(...) - Get events filtered by a certain criteria, for example, start date and end date criteria.
• Get, Set Event categories (getEventsExample(), addEventExample()).
• Get Event sensitivity (getEventsExample()).
• Send Meeting request via SMTP/Secured SMTP.
• Send and Accept Meeting Requests via WebDav.
• Decline meeting request support (MeetingReqExamples.java).
• Tentative meeting request response support (MeetingReqExamples.java).
• Getting recurrence rule (see addRecurrentEventAndGetThisEventRecurrenceRuleStrExample()).
• Create recurrence support. (see addRecurrentEventExample() ).
• UID filtering support.
• Create appointment support (meeting with no attendees).
• Get Attachment support.
• Sorter support, can sort on using every field (see: getEventsUsingSorterExample() )
• get Recurrent Events By Uid. this method will get all occurrences exceptions and master record of a recurrent event.
  using its UID. (see getRecurrentEventsByUidExample() ) .
  
  EWSJ Supplements
  
• EWSJ get user availability data.
• EWSJ update meeting attendees (and send meeting requests accordingly).
• EWSJ append attendees support.
• EWSJ recurrence support.
• EWSJ All-day event creation support.
• Sorter support.
• Support for meeting request event association. (getMeetingRequestAndAcceptExample())
• Support for accept meeting request. (getMeetingRequestAndAcceptExample()).
• Support for decline meeting request.(getMeetingRequestAndAcceptExample()).
• Support for tentatively accept meeting request.(getMeetingRequestAndAcceptExample()).
• Support for Event Append description (body).
• Get Attachment support (see getFullEventExample()).
• Get Attendees response support (see getEventAttendeesResponseTypeExample()).
• Recurrence support get/update(see getRecurrentEventsExample()).
• update/add/get event categories support(see updateEventExample()).
• Support for getting Events With User Defined Properties (see getEventsWithUserDefinedPropertiesExample() )
• Support for getting full events in one method call(see getFullEventsExample()).

Email
• getEmails(...) - Get emails from exchange server.
• getEmails with attachments.
• delete email.
• update read flag. see example: updateEmailReadFlagExample().
• sendEmail(...) - send email.
• sendEmail with attachment.


EWSJ Supplements

• EWSJ Support for rfc822 attachments (email as an attachment).
• EWSJ update isRead flag. see example: updateEmailReadFlagExample().
• EWSJ Support for sending emails.
• EWSJ get email shallow support, getting only the basic email information to increase performance.
• EWSJ Support for sending emails with attachments.
• Sorter support.
• Support for outlook msg file attachments (email that have email attachments in the msg format).
• Email Forward support(see getFullEmailAndForwardItExample()).
• Send email with Inline Attachments support(see sendEmailWithInlineAttachmentExample()).
• Support for getting the full MIME content of the email (base64 encoded).(see getFullEmailExample()).
• Send email on behalf of group support, see sendEmailFromGroupExample().
• Inline attachments support for Exchange 2010 see sendEmailWithInlineAttachmentExample().
• Reply, ReplyAll support see replyOrForwardEmailExample().
• Forward support see replyOrForwardEmailExample().
• Support for getting email ids for improved performance (see getEmailIdsExample() ).
• Support for ReplyTo (see sendEmailExample() ).


JEC Supplements

• Server side subject filtering support.
• Get emails using range (partitioning) support, date range and index range. (see example: getEmailsUsingRangeExample() ).
• Emails sync support (see example: getEmailsWithLastModifiedDateFilterExample() ).
• Sorter support, can sort on using every field (see: getEmailsUsingRangeWithSortExample() )
• Support for getting msg attachments (email that have an email as an attachment).
• Support for getting email using its URL.
• Support for getting email using its UniqueIdForURL.
• Support Server side Partial email subject filter (see getEmailsUsingSubjectFilterExample()).
• Server side Partial email body filter support (see getEmailsUsingBodyFilterExample()).
• Server side exact email body filter support (see getEmailsUsingBodyFilterExample()).

Tasks
• getTasks(...) - Get list of tasks from exchange server.
• addTask(...) - Add tasks to exchange server.
• updateTask(...) - Update tasks on exchange server.
• Delete Task(...) - Delete a task on exchange server.
• Task reminder(...) - Add or update task reminder
• Sorter support, can sort on using every field.


JEC Supplements

• Get, Set Task categories (addTaskExample()).
• Get Attachment support (getTaskAttachmentsExample()).
• get task using its uniqueId support (getTaskUsingItsUniqueIdExample()).
• Filter support. (getTasksWithSorterAndFilterExample() ).
• Sorter support. (getTasksWithSorterAndFilterExample()).
• Synchronization Support. (getTasksWithLastModifiedDateFilterExample()).
• Assign task support (assignTaskExample()).


EWSJ Supplements

• EWSJ get task with search expression support.
• EWSJ get full task support.
• Get attachments support. (see getFullTaskExample() )

EWSJ Notifications
• Notification pull subscribe - See notificationsExample()
• Notification Unsubscribe - See notificationsExample()
• Get Notification events - See notificationsExample()