SaaS Startup Content Marketing Playbook - Proven content marketing tactics to grow your SaaS startup
Really Good Emails - A large collection of good product email design.
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Good Sales Emails - Best sales emails from great companies
Precedent.io - SaaS content marketing, on autopilot
Great Email Copy - A dose of emails from around the web.