Checking up on what's going on with the website and what type of promotions they are doing on social media is great. It allows you to make a great amount of profit but we should also remember that they are sending out other stuff with the emails as well, personalized stuff.
Social media part is for everyone to see and that's usually fine, if you strictly just check that then it should be fine, but if you want to check your email, you could find personalized stuff, like maybe even rewards which you can use to gamble, such as free bets and all. Not really great deal to be fair but it is still there and you could get some, so do not ignore your mails either.
Free betting is a powerful tool nowadays. Is that also possible on this site without having made a deposit on the site? It would be nice to try out the site. If you are an existing customer, a free bet may be too minimal, then you want a cashback or just some money on your balance for example. Although the preferences of players can vary on this. Announcing these promotions on Social Media is very powerful for sure.