If the following 7 adjectives apply to your eNewsletter content, then you're doing a good job.

1. Relevant. Whenever possible, when reaching out to subscribers with an email, try to drill down to the information that interests them. A great way to do this is to maintain multiple specifically targeted lists for detailed campaigns – for example, if you run a utility company, make a separate list for commercial and residential clients. Organize your content so that each mailing list receives the events or articles that are relevant to them. By using targeted lists, you’ll increase link clicks and decrease unsubscribe rates.
2. Connected. Use hyperlinks. An indispensible benefit of email newsletters is their ability to push traffic directly to your website. When associated with engaging articles or other content, hyperlinks send readers straight to the content that interests them on your website. The increased traffic could support a number of goals depending on your organization’s mission – sales, subscriptions, increased readership, donations, downloads, ad revenue, etc. In addition to increased page views, readers coming from your email newsletter are already interested in your content, meaning that they are more likely to spend more time on your site and less likely to bounce.
3. Consistent. Create a template with reliable content categories. This will not only help you stay cognizant of your newsletter’s goals, but also allow your readers to anticipate the information that they will receive from you; they will be more likely to open and read your newsletter and less likely to unsubscribe. Consistency shouldn’t end with content, though – the distribution of your newsletter should also be consistent. Find a distribution period that fits the amount of content – perhaps it’s weekly, monthly, or quarterly. Random newsletter blasts could disengage your readers. If they’re too often, you could annoy readers, but if they’re too infrequent, you aren’t making an impact.
4. Timely. In marketing circles, frequent use of the word “newsletter” can blind us to the word’s components – “news” and “letter.” The meat of your newsletter should be news – and, vitally, no one wants to read old news. Post upcoming events and recent happenings – stories and blurbs that show your organization is proactive and on the rise. As a general rule, avoid old news as a main content focus, unless it is relevant to present or future events.
5. Polished. In official communications (like newsletters), errors, factual mistakes or an inappropriate writing style affect your audience’s perception of your organization. By observing a simple checklist before sending your newsletter, you can safeguard against errors. First, use your word processor’s built-in spellcheck function – but don’t trust it completely. Print and proofread your documents instead of proofing them on a computer screen. Finally, put the articles in front of a few other people before giving final approval; you never know what another person might catch.
6. Accessible. This one’s pretty simple – throughout your organization’s communications, make it easy for readers to subscribe to your newsletter. Mention your email newsletter in direct mail pieces or brochures. Keep the newsletter signup area visible across the site to encourage more enrollments. In general, push readers of your organization’s other marketing materials toward your newsletter to build a subscriber base.
7. Monitored. Email newsletters enable you to collect information and build marketing strategies just by tracking statistics from your email distribution campaigns. By monitoring which and how many users click on links in your emails and then analyzing their activity on the site, you can see what information and strategies draw the most traffic and keep it on your website.