First Login and Levelup Mail

local logo = "TrinityCore"
local package = true
local notify = true
local package_repeat = true
local first_package = 55000
local multiplication = 10000

T = {9, 19, 29, 39, 49, 59, 69, 79};

local function login(event, player)
    if(package == true) then
       SendMail("Welcome to "..logo.."", "Greetings "..player:GetName()..", We at "..logo.." would like to thank you for playing on our server and we deeply hope you will enjoy your stay! Best Regards "..logo..".", player:GetGUIDLow(), player:GetGUIDLow(), 61, 0, 0, 0, first_package, 1)
   else
       SendMail("Welcome to "..logo.."", "Greetings "..player:GetName()..", We at "..logo.." would like to thank you for playing on our server and we deeply hope you will enjoy your stay! Best Regards "..logo..".", player:GetGUIDLow(), player:GetGUIDLow(), 61)
    end
end

local function levelup(event, player, oldlevel)
 for k, v in ipairs(T) do
   if(oldlevel == v) then
if(notify == true) then
    player:SendBroadcastMessage("|cFFFF0000You have recieved a mail from "..logo..".")
 end
    if(package == true) then
         if(package_repeat == true) then
       SendMail("Congratulations!", "We at "..logo.." would like to congratulate you for reaching level "..player:GetLevel()..". But also thank you for spending your time and effort in our community therefor we at "..logo.." would like to give you a small token of our appreciation, best regards "..logo..".", player:GetGUIDLow(), player:GetGUIDLow(), 61, 0, math.floor(player:GetLevel()*multiplication), 0, first_package, 1)
    else
       SendMail("Congratulations!", "We at "..logo.." would like to congratulate you for reaching level "..player:GetLevel()..". But also thank you for spending your time and effort in our community therefor we at "..logo.." would like to give you a small token of our appreciation, best regards "..logo..".", player:GetGUIDLow(), player:GetGUIDLow(), 61, 0, math.floor(player:GetLevel()*multiplication))
        end
    else
       SendMail("Congratulations!", "We at "..logo.." would like to congratulate you for reaching level "..player:GetLevel()..". But also thank you for spending your time and effort in our community, best regards "..logo..".", player:GetGUIDLow(), player:GetGUIDLow(), 61)
      end
    end
  end
end

RegisterPlayerEvent(13, levelup)
RegisterPlayerEvent(42, login)