This is a quick guide to setting up an android device to sync contacts with the MailSync+ service using CardDav-Sync free.
After you have installed CardDav-Sync free from the play store you should see this window:

When you open for the first time you should see the menu to the right:
- Choose CardDAV
- In the upper right click on the ⁝ icon.
- Now check the box for "Use preemptive authentication"
- Now, enter Server name or URL: mail.a51.co:8443
- username: (this is your email address)
- enter your password
- tap "next", then "done"
That's it, your done!
Contacts should now sync between the server and your phone.
What is the difference between CardDAV-Sync free and the paid version of CardDAV-Sync?
The paid version will sync additional fields which can be very helpful in a business environment. Its also a great app so we recommend you spend the $2.09 and buy the paid version of the app.
Android supports CalDav/CardDav or SyncML for contacts and calendar synchronization.
Here are the steps to setup android with CardDav for Contact Synchronization. (preferred method)
- From the google play store download "CardDAV-Sync free" from dmfs GmbH
- From the add account screen choose "CardDAV"
- In the upper right choose the " ⋮ " icon then "setup options" and check the box for "Use preemptive authentication" then use the back navigation button on your device to return to the previous screen.
- Server Name / URL: mail.a51.co:8443
- Username: {your email address}
- Password: {your password}
Here are the steps to setup android with SyncML (alternative Method)
- From the google play store download a syncml client
- Once installed open the settings and choose manual setup
- Enter your username(email address)
- Password
- Server URL
- Click login, import your phone contacts(optional), click to sync contacts and calendar. You will not be able to sync any other services with android.
Open Calendar Application
- Choose Accounts
- Choose "Add Other Account..."
- Under the Add a CalDav Account Menu
- Account Type: Manual
- Username: your email address
- Password: your password
- server: mail.a51.co
- Sign In
Notes:
- If asked, leave server path blank
- Use SSL should be checked
- Leave everything else to defaults.