What Sellvia marketing tools or services you like best?

So here I wanted to gather some info about Sellvia tools and services for marketing. On the Sellvia dashboard there are a diverse range of tools you can choose, but what to choose? Ofc it all depend on your needs and what's more important for you but still. Maybe something works better? I recently purchased tiktok and insta store and pretty satisfied with the results it brings, Sellvia did really good job here. What can you say about Sellvia SEO tool? Or email marketing? Is those services are as effective as Sellvia claims them to be?