Litmus recommends around 50 characters. Yes Lifecycle Marketing says emails with subject line up to 20 characters have ethe highest average open rate, unique click rate, and click-to-open rate. An analysis from Retention Science found that subject lines with 6 to 10 words results in the highest open rates. And Return Path advises using 61 to 70 characters.
I use Ratepoint because they also offer a review (testimonial) widget I have posted on my site. Ratepoint has a promotion that offers free mailing list service forever if your list is 125 or less. Obviously most of us will want more than 125 folks reading our newsletters but it’s a good start. Good templates, tracking and definitely awesome support.
Perhaps I overshot and started using something that was way beyond what I needed, or maybe it was the way it’s built that didn’t jive with my workflow, but whatever the case may be, I knew I had to look for another solution—a simpler solution—and I needed to find one quickly. My team is close to the point of implementation on a brand new website design, very much inspired by the results of the survey we ran recently here on SPI.
I am not signing up for an account so I don't know exactly how the API works, but if I were setting up an iPhone App to work with this, I would use the rails plugin. Rails gives you JSON communication for free (IE no extra work required) http://guides.rubyonrails.org/layouts_and_rendering.html see section 2.2.9. Then use on IOS app use something like: http://code.google.com/p/json-framework/ to interact with that.
There are two great things about Mad Mimi. First: it's very cheap. Second, it's very easy to use. These two factors may convince users to purchase a plan. However, some users will find that there are some noticeable omissions when it come to more advanced functionality, particularly in the autoresponder and split testing department. - Chris Singleton
What I was trying to get across (and perhaps I didn’t make myself clear here, my fault), is that there are also other equally excellent services. I mentioned MailChimp as someone mentioned they’d like a mail list manager but couldn’t afford AW. MC is free for the first 1000 subscribers, and I think for a large proportion of entrepreneurs, that is enough to get started (more than enough, probably).
For example, if someone is on your list and they choose to unsubscribe later, they still count as an email in the system which is included in your total subscriber count. You must fully delete that record from your account in order to not have to pay for it, and so I found myself going into each of my individual lists and deleting unsubscribes from my account about once a week.
When I first started blogging several years ago, I jumped onto the aweber band wagon. I built a subscriber list of over 400 people. I was posting regular articles and then a monthly newsletter with more in-depth articles for free. I was spending so much time writing, I never created a product and the onsite ad’s were not bringing in enough money to cover the cost.
After you have entered your "List Name" you will need to enter a "List Description." Here is where you will describe the kind of information you'll be sending from this list. There is a 400 character limit for the "List Description." Subscribers will see your "List Description" on the unsubscribe page if they ever go to unsubscribe from your list. Once you are done entering your "List Description" click the "Next Step" button.