ProtonMail was founded in 2013 by scientists who met at CERN and were drawn together by a shared vision of a more secure and private Internet. Since then, ProtonMail has evolved into a global effort to protect civil liberties and build a more secure Internet, with team members also hailing from Caltech, Harvard, ETH Zurich and many other research institutions.
Things are probably more complicated than that, though. As a recent survey conducted by market research firm Statista clearly shows, email is one of the most popular apps for mobile devices across most organizations and even consumers. Given how many workflows, business processes, and just plain important communications take place over email, this is one area where you likely shouldn't skimp.
Unfortunately, most solo ad sellers wouldn’t know HQ solo ads if they walked up to them and hit them in the face. They chuck around the same subscribers from list to list, never realising that those poor people are BEAT over the head with the same offers day after day. They don’t care anymore, they don’t want your stuff, they’ve lost interest in the industry. That’s why FRESH leads are so important, and hey, who am I kidding, I got’em!
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

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.
Obviously, it takes more work to create and place guest posts, but it’s worth it if the publication is aligned and authoritative. We found a way to create additional value with this as well by working with internal HubSpot experts who wanted to get their thoughts out on a given subject. For example, here’s a guest post that Blake Toder wrote for the Usabilla blog:
The cloud certainly makes delivering email to your users easier but, for the vast majority of organizations, there's still going to be some setup required beyond simply activating the service. At a minimum, a domain must be purchased and configured to point to the new email host. The service provider can make this process very simple or they can make quite hard; this is something you should watch for in the provider's customer support forums as well as in our reviews. In most cases, there is a validation phase that will require some technical familiarity, though a few providers go so far as to walk even neophyte users through it step by step. Other solid services bolster excellent support with tutorial articles and videos that also walk you through the process. The worst will leave you to figure it out on your own.
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.
Not only is InVision's newsletter a great mix of content, but I also love the nice balance between images and text, making it really easy to read and mobile-friendly -- which is especially important, because its newsletters are so long. (Below is just an excerpt, but you can read through the full email here.) We like the clever copy on the call-to-action (CTA) buttons, too.

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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