Legal Issues
You Can Grow Your Email List Using LinkedIn, But Not This Way!
https://www.thesocialmediahat.com/blog/you-can-grow-your-email-list-using-linkedin-not-wayThe Spamhaus Project - Mailing Lists -vs- Spam Lists
https://www.spamhaus.org/whitepapers/mailinglists/The Spamhaus Project - The Definition of Spam
https://www.spamhaus.org/consumer/definition/CAN-SPAM Act: A Compliance Guide for Business
https://www.ftc.gov/tips-advice/business-center/guidance/can-spam-act-compliance-guide-business
Email Marketing Apps
Pricing and Plans | SendGrid
https://sendgrid.com/pricing/Email Delivery Service Pricing | SparkPost
https://www.sparkpost.com/pricing/The Best Email Marketing Software of 2018
https://www.pcmag.com/article2/0,2817,2453354,00.aspThe 12 Best Free Email Marketing Apps
https://zapier.com/blog/free-email-marketing-software/Sucuri WebSite Firewall - Access Denied
http://www.wpbeginner.com/showcase/best-email-marketing-services/
Email Samples
5 cold email templates that will generate warm leads for your sales team!
http://blog.close.io/5-cold-email-templates-that-will-generate-warm-leads-for-your-sales-teamThe Best Cold Email I Ever Received (And How to Steal His Approach)
https://www.proposify.com/blog/the-best-cold-email10 Cold Email Formulas and The Science Behind Why They Work
https://www.yesware.com/blog/cold-email/
Best Practices
What Shouldn't We Expect from Our Cold Email Addressees?
https://blog.woodpecker.co/cold-email/self-service-cold-email/Step-by-Step Guide to Drafting the Best Cold Email Ever
https://www.entrepreneur.com/article/276492How to introduce your startup in an email
https://alexiskold.net/2015/11/12/how-to-introduce-your-startup-in-an-email/Email Writing For Startups - business.com
https://www.business.com/articles/email-writing-for-startups-how-to-get-heard/What We Learned From Sending 1,000 Cold Emails
https://www.fastcompany.com/3036672/what-we-learned-from-sending-1000-cold-emailsA Guide to Cold Emailing
https://hbr.org/2016/09/a-guide-to-cold-emailingAre your cold emails killing your business? (And the fix to it!)
http://blog.exitbee.com/are-your-cold-emails-killing-your-business-and-the-fix-to-it/26 Cold Email Examples Broken Down To Write Your Own (2018 Update)
https://www.criminallyprolific.com/cold-email-example/
Pros & Cons
10 Important Pros and Cons Of Email Marketing - Jellymetrics
https://jellymetrics.com/pros-and-cons-of-email-marketing/Design News – greensplash design - Web Design, Branding, Marketing
http://www.greensplashdesign.com/e-mail-marketing-the-pros-and-cons/What are the pros and cons of cold calling or cold emailing for medium businesses to large corporation B2B sales? - Quora
https://www.quora.com/What-are-the-pros-and-cons-of-cold-calling-or-cold-emailing-for-medium-businesses-to-large-corporation-B2B-sales
What are Cold Emails?
What is Cold Email (and is it SPAM)?
https://www.leadfuze.com/what-is-cold-email-and-is-it-spam/