It will be wrong to underestimate the efficiency of email as it is still the most effective solution for those who want to connect with their audience and keep them updated on the recent content. Also, you could do that on a regular basis and expect your emails to be read by an overwhelming majority of your audience. So, it is not obsolete, yet. Besides, it is still common to see a WordPress web development company that recommends it.
So, to help with email marketing and email promotion in WordPress, here is a list of 4 WordPress-friendly email marketing plugins which you could use this year to keep your audience updated: