Will i be arrested for a 2008 payday loan that ikeep getting emails about starting today. Iwas told iwill be arrested in 3 hours if i don't send it

No, you will NOT be arrested for a payday from 2008.  It is very common for payday loans to be sold to debt collectors who will use almost any tactic necessary to collect the debt, including threatening arrest or litigation.  In Alabama, you will NOT be arrested for not paying a payday loan.  If the loan was originated in 2008, it's likely the statute of limitations has passed and they cannot sue you.  The person/debt collector calling you may not even legally own the debt or have a right to collect it.