Why not resurrect old posts? You can bet your readers, especially new subscribers, haven’t read everything you’ve published. Consider scouring your blog for posts that remain valuable. You might batch together several that cover a single category to make it easy to create a topical and thematic series. Or, you might have written a series of posts in the past that could be ideal for an autoresponder series.
ToFu: Leads at the top of the funnel need awareness. They know nothing about what you offer and what domain you operate in, so you’ll need to create a conversation around both these focus points—without selling your product up front. If you sell CRMs, you attract ToFu leads by talking about how SDRs (sales development representatives) can do their job better using CRM software. Blogs, ebooks and guides are content types that work well at this stage.
As mentioned before, the type of email campaign you send depends entirely on your goals with email. If you’re looking to drive direct sales then sending marketing offer and announcement campaigns are going to return the best results, however if you are simply looking to keep your existing customers up-to-date on the latest projects, products or developments at your company, then sending a regular newsletter is going to be the best way to achieve that.
The first thing to do, of course, is consider whether you want to include auto responders in your marketing mix. You'll need to be sure to find an email marketing provider that supports auto-responder functionality (not all of them do, though Comm100 does support auto-responder functionality). Then, when considering developing an auto responder program, you'll want to consider all of the following points:
When an MQL displays sales-ready behavior, like requesting for a demo or signing up for a free trial, they become a sales qualified lead. These leads are usually handed over by the sales team to an Account Executive (AE). SQLs are close to making a purchasing decision, so the quicker the AE acts, the higher their chances of conversion. A good way to identify an SQL is by applying the BANT framework—do they have the Budget, Authority, Need and Timeframe to buy from you? https://s3.amazonaws.com/mailbakery/wp-content/uploads/2017/06/28123309/25_Brilliant-670x310.jpg
Don't use CTAs to drive people to your homepage, for instance. Even if your CTA is about your brand or product (and perhaps not an offer like a download), you should still be sending them to a targeted landing page that's relevant to what they are looking for and includes an opt-in form. If you have the opportunity to use a CTA, send them to a page that will convert them into a lead.

If links and looks are set, begin interacting with the page. Abandon it, adjust the window size, convert. Are error messages appearing when they’re supposed to (if, for example, you don’t input all the form’s required info)? Is your CTA button working? If you abandon the page, are you retargeted with ads? When you resize the window, does your landing page respond accordingly?