This message contains a special link: if your friend clicks that link, joins PA online lottery, and makes a $10 deposit within 30 days, you get $50 bonus money. The referral bonus lets you send an email to a friend. Only the referral promo requires using a PA lottery bonus code. There is also a constantly active referral bonus and daily promotions.
Also, you get $5 in Free Play when you join the online lottery PA website. However, there is still a traditional welcome bonus at PA iLottery, so you can earn bonus money for your first deposit. Keep in mind that this is a PA government website, so they are not too generous with promotions.
If you expect to find traditional gambling bonuses at the PA lottery, you might be disappointed.