Email search tools have hit the market to help scammers take advantage of hacked data. In the wake of Sony and Ashley Madison data breaches, these services will scan bulk email data for keywords that can be used to extort parties involved. For instance, the service can be used to search out a politician who used the infidelity site Ashley Madison.

MailChimp and Campaigner both offer email marketing services for small businesses. PC Magazine put the two services up against each other and compared pricing, subscriber management, campaign creation, analytics, and customer support to determine which company was the best. In a close decision, the judges selected Campaigner.

SlideMail is a free new iOS app that aims to improve the email management experience. Like other apps, SlideMail uses artificial intelligence to organize a user's inbox based on their behavior. For example, it will study a user normally archives a newsletter, then the app will suggest that the user automatically archive the newsletter in order to make the inbox more efficient.

Ashley Madison executives hacked into a competing dating site back in 2012, according to the company's emails which were stolen and released by hackers. Security expert Brian Krebs combed through the data released and found that Ashley Madison's founding CTO Raja Bhatia claims to have hacked Nerve.com's then-new dating website.

Apple CEO Tim Cook used email to help recover the company's stock price after shares fell sharply on Monday. "I get updates on our performance in China every day, including this morning, and I can tell you that we have continued to experience strong growth for our business in China through July and August," Cook wrote in an email to CNBC's Jim Cramer.

This year was the first time that the never active email subscriber segment dropped below 69 percent, according to a new report by Yesmail Interactive. The report, "The Rise of Email in 2015," found that mobile is becoming more important for email marketers. In fact, in 2015 more than a quarter of all email-driven purchases took place on mobile.

Need to create a professional email signature for your startup? WiseStamp has a tool to let users create a professional email signature. The template allows a user to add their logo, name, company information and social network links. Then the tool will create a signature that can then be customized using different templates.

Bing Ads has released a new tool to help advertisers manage ads. Now, users can select the "Notify me when" option to schedule email alerts about what's happening in their marketing campaigns. The "Notify me when" option is located under the Automate tab. An advertiser can sign up to get an email alert for a variety of metrics including: budget, quality score, return on ad spend and click-through rates.

The U.S. Postal Service said that it will review if any of its employees used their government email addresses to access the infidelity website Ashley Madison. The department, along with its internal affairs watchdog, will review whether any employees violated federal policies by using their government email on the site. "We are looking into this matter and will follow our existing administrative process if misconduct is identified," stated U.S. Postal Service spokesman Dave Partenheimer. The site was hacked last month and last week, hackers posted the site's user base online.

Millennials prefer email, says a new study from the Millennial Research Study from The Principal Financial Group. The research revealed that 47 percent of respondents prefer email to other communications from companies. The study also found that only six percent of millennials want to hear from companies via social media.