Segmentation tools: The most successful and professional email marketing campaigns make your customers feel important. To do this, you need to send only applicable content to each subscriber. With segmentation tools, you can separate your contacts into specific groups to ensure they only receive content that's relevant to them. Creating smaller email lists within your one large email list helps you target groups more effectively. Segmentation is an important email marketing tool.
Anne: How many "contacts" do you have on your list. Most plans charge by the number of contacts. Some charge by the total number of contacts, some by the contacts per list (which means you pay for duplicates if a single contact is on multiple lists due to your segmentation activities). As both Ray and Gee indicated, most email service providers will meet your functional requirements. I have used MailChimp successfully but switched to ActiveCampaign because of the marketing automation...
Extra analytics: While most services offer analytic tools, some service provide more amped-up analytical tools. Evaluating which extra analytical tools are best depends largely on your business's email marketing strategy and survey strategy. Some email stats will be important measures for certain businesses, while other companies will have another set of metrics to judge success.
Analytics and reporting: Once you send an email, you'll want to determine how it's doing. Most services provide a range of data, including how many emails you sent, how many of them landed in inboxes, the bounce rate, who opened your emails, and the number of clicks and opens by location. Click-through rate and open rate are two basic metrics all email marketing services should provide. Those are important metrics to track for businesses.  
WhatCounts, which recently joined forces with Windsor Circle, offers email marketing software can be operated from the cloud or on your own servers. Features include a life cycle workflow builder, behavioral personalization, advanced segmentation, dynamic content, a relational database, responsive templates, campaign analytics, A/B testing and social sharing.

Yahoo Mail takes extra steps to keep your account secure by automatically enabling spam filters and directing messages into the spam folder. It also recognizes some junk mail and will place these items in the trash bin rather than your primary inbox. Another positive feature our testers liked is the sender block, which lets you add an email address to a black list. Rather than redirecting emails from these senders into the spam or trash folders as other email services do, Yahoo Mail blocks these messages entirely.

Email outreach is a powerful way to build early momentum for your Indiegogo campaign. We find that it plays a critical role in raising the first 30% of your funding goal from your Host Committee (see below) before you officially launch your campaign. This way, when a wider audience visits your page, they’ll see your project already has a strong base of support and will feel more comfortable contributing to it themselves.
Not only was this initial email great, but his response to my answers was even better: Within a few days of responding to the questionnaire, I received a long and detailed personal email from Matt thanking me for filling out the questionnaire and offering a ton of helpful advice and links to resources specifically catered to my answers. I was very impressed by his business acumen, communication skills, and obvious dedication to his readers.
Gmail lets you log into multiple email accounts at once and simply toggle between them without having to log out and re-enter your credentials each time. We found this to be a very helpful perk especially if you have a personal Gmail account and another dedicated to your work or home business. This multi-account feature works on mobile, too, so you’re always connected and can quickly access important email while on the go. It’s hard to attach files to outgoing messages using the Gmail app, though, since it only allows you to upload one file at a time.
MessageGears is a hybrid email marketing system that combines the security of an on-premises system with the scalability of the cloud. The service connects directly to any local or remote database, data warehouse, e-commerce system, or content management system. There is no need to extract, transform, or load customer data into the system or to move or replicate data. Features include subject line previews and testing, spam testing, and automation, drip and trigger campaigns.
For example, if you set up an autoresponder with an interval of 24 and you receive an email from user@example.com at 8:00 AM on Monday, the autoresponder immediately responds to the message. If, however, user@example.com continues to email you throughout the day, the autoresponder does not send another response for 24 hours after the initial email (in this case, 8:00 AM on Tuesday). If user@example.com emails you again after the 24-hour interval expires, the system sends them an autoresponse.
www.constantcontact.com (Not Free - But 60 Day Free Trial): Constant Contact email services blends your email campaigns and your social networking campaigns into a single matchless and easy-to-use service. They provide an email marketing service with 400+ customizable templates and the option to insert text or your own HTML code into the emails. you also get a 60-day-free-trial with this email marketing service.
Most companies will prefer a third-party solution since not only will these be more capable, they'll also be supported more effectively by related back-end apps, such as mobile device management (MDM) platforms and mobile-oriented endpoint protection solutions. You'll also have an easier time pushing a third-party platform out to registered client devices, though some hosted email providers can help with this step.
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Admail.net is an all-in-one email marketing and social media solution that lets businesses create and send professional email marketing campaigns. The platform's email builder features more than 300 responsive design templates. You can connect email marketing and social media efforts with AdSocial to share your email marketing campaigns through social media. The service also offers a variety of contact management and reporting tools.
Yahoo Mail gives you 1 terabyte of inbox storage (enough to hold 20 million email messages) before you must delete some to receive more messages. You also have a daily sent-message limit of 500 emails – five times more than most free email services allow, but less than Gmail. The Yahoo Mail app is also easy to use, with the same features available as the online account.

dotmailer is a marketing automation platform that empowers B2B, B2C and e-commerce businesses. The software enables marketers in 150 countries to use advanced data to design, test and send powerful automated campaigns. In addition to being a Magento Premier Technology Partner, dotmailer integrates seamlessly with other ecommerce platforms and CRMs.
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