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.
While most businesses will have such suites in place, it often falls to the email service to provide an additional layer of anti-phishing and anti-malware protection. Our reviews found a surprising variance in this department, however, ranging from very robust to completely non-existent, so be careful. Since it's such a huge liability for business owners, this could be one of the most important factors in terms of background features. At the very least, it's better than filing an insurance claim or outright losing funds due to simple social engineering tactics.
Moonmail is great platform that utilizes Amazon SES  – which means you are only paying for what you send (vs. subscribers in your account), making it at cost effective solution for small businesses. With a powerful drag and drop editor, deep analytics, and built-in heatmaps (so you can see what content is working) all under a clean and easy-to-use interface, it’s a excellent choice to scale your email marketing needs.
Marketing emails need to be personalized to the reader and filled with interesting graphics. Few people want to read emails that are addressed "Dear Sir/Madam" -- as opposed to their first or last name -- and even fewer people want to read an email that simply gives them a wall of text. Visuals help your recipients quickly understand what the point of the email is.

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.