MailChimp - MailChimp is the best way to design, send, and share email 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)
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.
Trumpia - SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.
Mailjet - All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.
Clickatell - Simple, reliable mobile messaging cloud.