Please provide a comparison of these email/newsletter services based on their suite of features and pricing: Mailchimp Pro, ExactTarget, Boomtrain, Sailthru, and any other popular options you discover.
The most cost effective email/newsletter service based on published pricing information is either MailChimp or Robly's mid-tier plan. MailChimp will cost approximately $1,074.00 per month and Robly's mid-tier plan is about $75 less at $999.00 per month. I have provided a comparative analysis of MailChimp, Robly, and five other services on the attached spreadsheet.
I began my comparison of email/newsletter services with the companies you mentioned, which were MailChimp Pro, ExactTarget, BoomTrain, and Sailthru. During my research, I discovered that of these four companies, only MailChimp has published its pricing for 200,000 subscribers. For ExactTarget, which is now Salesforce, and BoomTrain I was able to find a minimum price, but for Sailthru, no pricing at all was available. These three services require a quote request with specific company details to obtain a price for 200,000 contacts.
Since the research of ExactTarget, BoomTrain, and Sailthru did not yield very useful results, I searched for other email/newsletter services that do provide pricing for 200,000 subscribers. Unfortunately, I was only able to identify one other service, Robly, that publishes its pricing for this number of subscribers on their website. Therefore, the only true comparison I am able to offer on the spreadsheet is of MailChimp Pro and Robly.
For the other five services, I provided as much information as I could find on their pricing structures. Klaviyo provides pricing for as many as 150,000 subscribers, but for any number above that requires a quote request. Campaign Monitor provides pricing for as many as 50,000 subscribers, but also requires a quote request for higher numbers.
For this reason, you will see all seven services listed on the spreadsheet in order from the cheapest plan with the most features to the plans with no published pricing information and fewer features.
After researching the pricing information, where available, and the features of MailChimp Pro, Robly, Klaviyo, Campaign Monitor, BoomTrain, Sailthru, and ExactTarget/Salesforce, I have determined that MailChimp Pro and Robly both offer significant features for approximately the same price. MailChimp Pro's plan for 200,000 subscribers costs $199 per month for the subscription and $875.00 per month for subscribers for a total of $1,074.00 per month. Robly has three plans and while the top tier would cost $1,299.00 per month, the mid-tier is actually $75.00 per month less than MailChimp Pro at $999.00 per month. Both plans offer robust features that will likely meet your newsletter needs.