I have about 600 clients records in an Excel sheet (every client in a raw of the sheet), these information are their contact details (Name, Company, Phone, fax, email etc).

I want to import this list to LimeSurey and expecting the LimeSurvey to send an individual email to every client with an unique URL where the client should click it and update (edit or add) their data.

How can I achieve this using LimeSurey?

Please refer to the manual.

1) Create a survey with tokens and custom attributes - manual.limesurvey.org/Tokens

2) Set the default values of your questions with Expression Manager