Many people look for a newsletter plugin for this single feature–all they want is to send automatic email notifications of content updates. If that’s really all you want, then check out this other guide I wrote on the subject.
But if you’re looking to have this feature, among other newsletter functionalities, such as the ability to schedule autoresponders, send individual announcements, have access to templates, and you’re generally looking for an all around email sending solution, then checkout these plugins.
You can click on the name of the product below to view its full review.
Tribulant Newsletter
Tribulant Newsletter is able to send a periodical newsletter that contains the latest posts from your WordPress site. You have a lot of flexibility as to how frequently the newsletter goes out--from "Every 2 minutes" to "Once Monthly". You can even specify the categories of posts to include, and the specific mailing lists that should receive those posts.
WP Autoresponder
WP Autoresponder is able to send new posts as emails to your subscribers as you publish the posts. Your subscribers can even choose specific categories from which to receive update notifications. However, WP Autoresponder cannot aggregate several posts in a single daily, or weekly, or monthly newsletter. It can only send notifications for individual posts.
Satollo's Newsletter
Satollo's Newsletter calls this feature "Feed by Mail". Take a look at the screenshot below to get an idea of the settings and options that the plugin makes available to you:
EasyMail Newsletter
When you're creating a newsletter in EasyMail, you can select to include the content of a certain post in the newsletter. In this way, you're able to send site content as a newsletter, but that's not really an automatic update notification--it is manual.
EasyMail doesn't have the ability to send automatic content update notifications.
MailPress
MailPress can send site content updates as a newsletter to your subscribers, but getting that to work is confusing. When you activate the newsletter add-on, you'll be able to configure the newsletter functionality in the settings menu. You just set the number of posts to include in the newsletter. Then when you're editing an individual post, you have more settings there, like send newsletter Daily, Weekly, Monthly, etc...And these settings in those places doesn't make sense!!
MailPress its good one, but FUMP (+ plugin what integrate with WP) its better
What FUMP? Do you have a link?