How can I synchronize contacts from a CSV file with other applications? – sync.blue® help

General

The CSV file can be created automatically or manually and uploaded to any web server.

The file must be formatted in the character set utf-8.

Column Name	internal_id	family_name	given_name	company	department	position	phone_work	phone_home	phone_fax	phone_mobile	phone_pager	phone_other	email	birthday
Description	Internal ID	Last name (also known as "family name")	First name (alias "given name")	Company	Department	Position	Work phone	Home phone	Fax	Mobile phone	Pager	Other phone number	Email address	Birthday
Restrictions	Optional Unique per row Alphanumeric	Required	Required	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	Optional	optional Parsable date format
Example Value	1	Doe	John	Contoso GmbH	IT	IT Team Lead	Only one: '+4923648873040' Or multiple: '+4923648873040';'+4923648873050'	'+4923648873041'	'+4923648873042'	'+4923648873043'	'+4923648873044'	'+4923648873045'	john@doe.com	2022-06-11

The order of these columns is irrelevant, but the column names are not.

To import custom fields, the respective field names can be used as column names.

Date	Change Log
06/27/2025	Formatting simplified Legacy column display_name removed
02/19/2024	Added columns company, department, and position
02/12/2024	Internal ID is now optional Deprecation of old phone number format (e.g. WORK:+4923648873040)
06/08/2022	Added columns phone_work, phone_home, phone_fax, phone_mobile, phone_pager, phone_other, birthday Support for multiple phone numbers per column