I was wondering if it was possible to get Universal Deep Linking working with redirects that open up Safari first. I've successfully gotten deep linking to work when doing a normal link to the site, but when it is behind a link that is created by a marketing company, that link opens up Safari first, then opens the mobile web browser and not the app itself.
Is it possible to go from a redirect in Safari to the app?
No, Universal Links do not work with redirects. I'd encourage you to file a bug report if that's something you'd want to see.