Molly K. McLaughlin is a New York-based writer and editor with more than a decade of experience covering technology. She has tested and reviewed all sorts of software, mobile apps, and gadgets. Before launching her freelance business, she was an editor at PC Magazine, covering consumer electronics, followed by a stint at ConsumerSearch.com, a revie... See Full Bio
ProtonMail is a basic email service that is easy to set up because it doesn’t ask for any personal information. You just pick a user name and password, and you’re set. Be aware that some features – such as mail collection and the ability to sync across multiple devices – are only available with its paid email service. But the free version does have email encryption, which is important if you send messages with sensitive information you want to protect. ProtonMail automatically unencrypts the message when it reaches the recipient’s inbox and is opened.
When choosing a free email account, you want to look for a few characteristics to help you determine which one is best for you. The accounts will differ in how much email storage you get, what the interface looks like and how it can be customized, and what types of advanced features are included, like messaging, filters, and the ability to import other data.
Marketing automation tools: With marketing automation tools, you can send the right email to the right person at the right time. You just have to set up conditions, then the tools will take care of the entire customer journey. Considering how busy some small businesses are, finding a service with email marketing automation may be a top priority for some businesses.
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.  
Examples of this include things such as instant messaging (IM) and team chat tools, video conferencing software, online meeting collaboration tools, shared team intranet sites, and more. Some even integrate with third-party tools such as Slack, a highly popular collaboration tool that combines customizable chat "channels" with file sharing and project management. For those who want to integrate with certain apps more deeply or integrate with custom-developed apps they have built in-house, many bigger-name email services will provide robust application programming interfaces (APIs) that will let your in-house developers or consultants deliver on those needs. They will need to be involved in the email service selection process, however, as this is an important consideration during your evaluation period.
Robly's OpenGen technology utilizes a traditional email campaign process; however, OpenGen then resends your campaign one to 10 days later, with a different subject line to those subscribers who didn't open the first campaign. The system sends emails one at a time, at the moment subscribers are most likely to check their inboxes. The service features A/B testing, a pop-up widget to increase contacts and mobile-responsive templates.
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