I don't think that there is a an extension for this and I have no idea how salesforces works in terms of sending emails.

However, you can always create your own token table, then create your own token links via excel and import them into salesforce and send them this way.

Did you read the manual?

[url] manual.limesurvey.org/Survey_participants/en [/url]

And you may contact the LimeSurvey partner "encuesta.biz"
[url] forums.limesurvey.org/forum/can-i-do-thi...rvey-with-salesforce [/url]

Joffm