Please take a look at the automatic_addressbook plugin

http://code.crapouillou.net/projects/roundcube-plugins

It is not exactly what you are looking for as it doesn't collect addresses you received mail from but only addresses you already sent mail to.

I think this could do half of the job.

regards,

-- 
Sébastien BLAISOT

Le 10/06/2013 06:34, Suja Amitabh a écrit :

Dear rc users,

Is there any plugin that supports auto completion of ids from the envelope addresses (MAIL FROM, RCPT TO) of mails in your mailbox?

The contacts which are not there in address book, but if we have received mails from them, can those ids come automatically when I compose mails?

Greetings.

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