# Mac OS X: Add calendar (CalDAV) and task (Reminders) service in iCalendar.app > Important notes: > > * SOGo provides __EAS (Exchange ActiveSync)__ support, but not __EWS > (Exchange Web Service)__. > > * Outlook 2013 for Windows works well with EAS. > > * Below mobile devices works well with EAS, they will sync mails, calendars, > contacts, tasks, memos/notes. > > * BlackBerry 10 devices > * iOS devices (iPad, iPhone). Tested with iOS 8.1.3. > > * Apple Mail.app, and Outlook for Mac support EWS. But not EAS. > * Outlook 2010 for Windows supports MAPI. > * iRedMail-0.9.0 doesn't integrate [OpenChange](http://www.openchange.org) and > [Samba4](http://www.samba.org) for native MAPI support, so SOGo groupware > in iRedMail doesn't provide full support for Microsoft Outlook clients, > Mac OS X Mail.app and all iOS devices, don't try to add your mail account > as an `Exchange` account in these mail clients. You have to add separate > POP3/IMAP account, caldav/carddav account instead. ## Requirements * iRedMail-0.9.0 or later releases is required. * To use calendar and task service, you must choose to install SOGo groupware during iRedMail installation. ## Step-by-step configuration 1: Open application `System Preferences`: ![](./images/sogo/macosx.system.preferences.png) 2: Click `Internet Accounts`: ![](./images/sogo/macosx.internet.accounts.png) 3: on right panel, click `Add Other Account` at the bottom ![](./images/sogo/macosx.add.other.account.png) 4: choose `Add a CalDAV account` in popup window ![](./images/sogo/macosx.choose.account.type.caldav.png) 5: Fill up the form with your server address and email account credential * Account Type: `Advanced` * User Name: `your full email address` * Password: `password of your email account` * Server Address: `server name or IP address` * Server Path: `/SOGo/dav/[your full email address]` * Port: `443` * Use SSL: checked ![](./images/sogo/macosx.add.caldav.account.png) 6: Click `Create` button to create account. You can also enable Reminders (task service) if you want. ![](./images/sogo/macosx.add.reminder.png) That's all.