Keep the subject line and pre-header short: The subject line is crucial. Keep it short so the reader knows exactly what the email topic is about. And the pre-header text (also known as snippet text), don’t let it go to waste by using “To view this email in your browser…”. Instead, summarize the email or include a call to action (i.e., Use “FREESHIP” to get free shipping).

Well, charity: water took an alternate route. Once someone donates to a charity: water project, her money takes a long journey. Most charities don't tell you about that journey at all -- charity: water uses automated emails to show donors how their money is making an impact over time. With the project timeline and accompanying table, you don't even really need to read the email -- you know immediately where you are in the whole process so you can move onto other things in your inbox.

"Personalization in all of its forms will continue to grow, but the personalization of send time will be one of the fastest growing forms. More email service providers are offering this functionality, which optimizes the send times of emails to individual subscribers based on their historical open patterns. So, 2020 is set to be a big year for the adoption of send-time optimization.
Marketing emails need to be personalized to the reader and filled with interesting graphics. Few people want to read emails that are addressed "Dear Sir/Madam" -- as opposed to their first or last name -- and even fewer people want to read an email that simply gives them a wall of text. Visuals help your recipients quickly understand what the point of the email is.
I’m currently looking for an email marketing service for a mailing list of about 80,000 subscribers. I run an information product business in the fitness industry with a large number of customers buying our ebooks and online courses every day. I’m particularly interested in GetResponse, although I’d be keen to hear your thoughts on the flexibility of their service for creating autoresponders, and integrating with a checkout service (we use WooCommerce).
Not only is InVision's newsletter a great mix of content, but I also love the nice balance between images and text, making it really easy to read and mobile-friendly -- which is especially important, because its newsletters are so long. (Below is just an excerpt, but you can read through the full email here.) We like the clever copy on the call-to-action (CTA) buttons, too.
In truth, most of the AI that is discussed in the marketing world concerns the automation of processes. Marketing automation is centred around providing the most relevant content at the most suitable time to a specific individual or group, be they existing or potential customers. The intelligent part comes from how AI systems learn from past behaviours to shape future actions.

Anthropologists, sociologists and historians have used mailing lists as fieldwork.[6] Topics include TV series fandom,[7] online culture,[8] or scientific practices[9] among many other academic studies. From the historian's point of view, the issue of the preservation of mailing lists heritage (and Internet fora heritage in general) is essential. Not only the text of the corpus of messages has yet to be perennially archived, but also their related metadata, timestamps, headers that define topics, etc. Mailing lists archives are a unique opportunity for historians to explore interactions, debates, even tensions that reveal a lot about communities.[10]
When that’s the case, use small image files. Many email marketing service providers recommend images no larger than 1MB. Some email providers block images from senders that aren’t in a subscriber’s contacts, so you should always add alt text for any images. This ensures recipients know what an image is and they can click to view the image if they’re interested.

Dynamic segmentation – As alluded to earlier, you can’t just send out a generic message to everyone on your list. While basic demographic data can be used to segment your list, that’s far from taking the dynamic approach. Automation tools can help you segment your list as they go through the funnel, allowing you to send personalized messaging depending on their actions and behaviors.