User need promotioncode to register - possible? - Joomla! Forum - community, help and support

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hello

i have following sitution:  give persons promotion-code site. have make such new users need have 1 of these promotion-codes in order create account. 
i store these promotioncodes in seperate database or file.

furthermore - if possible - useraccounts should inactive after 10 days, , user shoud use new promotioncode activate account again.

does know possible in joomla? native? via plugin?  or?

/gtergy






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