Email setup

Regarding your question about content blocks vs custom footer: 

I think a custom footer is almost a subset of content blocks that just has more editing flexibility and is solely dedicated for email footers. So you're right, the email custom footer is a little more flexible; however, content blocks have the full editing capability as well and there shouldn't be anything you can't do with content blocks that you can do with email custom footer. 

I've seen customers use content blocks instead of email custom footer at the end of their emails. Sometimes, customers need multiple footers which is when content blocks will come in handy. 

Regardless, as long as you're using either or, I think you're in good shape. Not using one can be really cumbersome later when you make any edits to your footer and have to go back and manually change all your existing footers. I've seen this happen way too often. 

One pro-tip: use Liquid to template your copyright year in your footer so it always takes the current year instead of hard-coding the current year. Liquid looks like this: {{ "now" | date: "%Y" }}

Keep us posted on your misalignment issue!