Startup Stash - A curated directory of 400 resources & tools for startups
Mailivery - Reach the Inbox, not the spam folder.
Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.
Sidemail - The simplest way to send transactional emails. Sidemail makes sending transactional emails trivial, it's perfect for side projects, MVPs or the next big thing.
Content Marketing Stack - A curated directory of content marketing resources
Postal - Open source mail delivery platform, alternative to Mailgun or Sendgrid