The first known large-scale non-commercial spam message was sent on 18 January 1994 by an Andrews University system administrator, by cross-posting a religious message to all USENET newsgroups. In January 1994 Mark Eberra started the first email marketing company for opt in email list under the domain Insideconnect.com. He also started the Direct Email Marketing Association to help stop unwanted email and prevent spam.  
Andrew Warner experimented with this strategy on Mixergy.com a while ago. It was quite successful at growing his list. In a more prominent case with a full write-up on Tim Ferris’s website, Harry’s, a company that makes high-end shaving kits for men, ran a similar contest-like promotion before formally launching and managed to gather over 100,000 email addresses. Finally here are my recommendations for giveaway / raffle tools:
Transactional Emails – These are emails that are sent out after certain actions trigger them. When a customer buys a product or makes a reservation, emails are sent out confirming that transaction. They legitimize online commerce by giving customers a way to prove they have bought something. Transactional emails often also contain new sales messages. Studies have shown that transactional emails are opened 51.3% of the time, while newsletters are only opened 36.6% of the time. Knowing that they have a captive audience, marketers will often try to insert new sales pitches into emails that are not explicitly for selling. For example, airline reservation emails often ask if you would like to upgrade your seat for a fee.
CostX® is used by many different quantity surveying, commercial/residential construction and subcontracting firms around the world because of its superior electronic takeoff capabilities and integrated workbook. Some of the main features of CostX® include: • Measuring counts, lengths and areas with a single click • Supports scanned, PDF and CAD drawings, and also 3D BIM models. • Compare drawings and highlight the changes to identify drawing variations • Live-linked workbooks that can be taken down to ten levels • Ability to hide or show different drawing layers depending on what you wish to work on • Ability to create unlimited rate libraries • Subcontractor comparison/ Bid Day workbook In addition, we have a range of products designed to suit all needs and budgets.
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1) Optin Monster. Big fan of the exit-intent technology of this pop-up tool (as visitors go to exit your site), and the A/B testing functionality – vital for finding the highest clicked headlines/offer and squeezing more out of your email opt-in rate. It’s newly revamped, and I’m loving it. It helped increased my toolbox conversion rate from 2% to 45% which is fantastic. I actually did a comparison article against PopUpDomination and Optin Skin if you want to see other options:
HubSpot – HubSpot is an inbound marketing software platform that includes email marketing, SEO, marketing automation, blogging, landing pages, social media and website design. The email marketing module, which integrates with lead generation tools, features personalization, list segmentation, an email optimizer, an easy email editor, A/B testing, campaign analytics, automated sending and dedicated IP addresses. hubspot.com/products/email
GT STRUDL has offered structural engineers a complete design solution, and we've now incorporated 3D CAD modeling and 64-bit high-performance computation solvers into all versions. The structural analysis software is a high-quality, fully-integrated, database-driven system for comprehensive frame and finite element analysis and steel and reinforced concrete design