ConvertKit is a no-frills, relatively limited email marketing tool targeted at bloggers and vloggers to grow and keep names on their email lists. This isn’t the cheapest option, but where ConvertKit do stand out is the low percentage of ConvertKit emails that end up in the spambox. While some sites promise the world when it comes to getting emails sent, it’s quite another thing to make sure these mails aren’t immediately relegated to a spam list. Which is why we have included ConvertKit on our list. Every plan integrates with a huge number of other apps, too.