We often forget that a funnel isn't an opportunity to talk 'at' a funnel participant, but rather an opportunity to talk *with* a user. Those that just send emails (which is typical) are talking to a void... so the idea is to identify borrowing objective and take advantage of the progressive disclosure necessary to actually engage a user.
While our system allows for time-expiring content above any post at any time, a similar system will show content based on the email campaign that they're currently subscribed. This allows us to respond via video or other means *directly* to that engaged, known, and escalated audience. It's a type of engagement that allows you to continue with the funnel conversation by saying something akin to 'thank you for clicking on the link...', and then continuing on the conversation with a known audience segment (any number of videos may be assigned to a single page, since the video is shown on the basis of email campaign).
Like any popup or interference-based content, anything you place inline with your post content or landing page will potentially detract from the standard flow expected of your reader, so any interference must provide a clearly defined purpose, and it should be designed with a clear call-to-action designed to improve upon the funnel experience.
What I've just described is just one funnel feature, but it's highly effective. A funnel should always be focused on the conversation and 'what comes next'. We can't ever lead a user into a dead-end.
InPost supplement the powerful conditional framework features that underpins our entire high-performing website experience.
It should be noted that Yabber includes a full-featured email marketing suite, and we connect to ovther services, such as Google, YouTube, Facebook etc., so there's no caveman style copy-and-pasting.