Does vertical response have good deliverability?

You could try, but I don't think you can import your existing list into either of those platforms.

Try different subject lines first to see if your open rate increases before you try to switch. Its been the holidays too, so that might be a consideration, at least before you switch services.

Before you change services take a look at this blog post
from Digital Marketer and what they consider a good
open rate.

101 Best Email Subject Lines of 2014 (...and our 10 worst!)

Not very different to yours.

-Ray Edwards

I cannot claim that Vertical Response is or isn't at fault. I cannot know what exactly generated your problem.

But you may want to consider also the following points...

1) These days most of the pro email marketing services (EMS) have a good deliverability. But... Deliverability doesn't depend only on the EMS. My spam folder gets emails sent via AWeber, MailChimp, iContact, and others. It's not provider's fault Blacklisted domain names in links, tons of dollars , hype, aggressive marketing wording, etc.

2) Open rates aren't measured accurately.

3) Review the way you built that list of 200 leads, the squeeze page, the thank you page, your subject line, the wording, the links.

4) Holidays... During holidays some people don't check their messages very frequently. Even if they have just signed up in a hurry for your ebook or whatever you gave away. They may check their messages later. What's the hurry?

Added later:

5) Send several emails manually (not via VR), ask your subs whether they received your previous message or not, and see if they reply.