ProTexting - ProTexting offers mobile marketing tools for businesses to communicate with their audience via SMS & MMS campaigns.

the upside network - Localized startup media, podcasts, and newsletters

ShoutOUT - All in one business texting tool to send personalized alerts, promotions, reminders, short links and marketing campaigns, for any SMEs (hotels, restaurants, education, non profits, Woocommerce, banks, healthcare, agencies, supermarkets, weddings)

Polywork - Polywork is a professional social network that allows you to post updates about what you're up to (in work, and, if you like, in life too).

Clickatell - Simple, reliable mobile messaging cloud.

Newsletter Sponsorship Template - Building in Public Newsletter Sponsorship Management Toolkit