LoopMessage - LoopMessage is a perfect macOS tool for personalized mass messaging via iMessage/SMS, WhatsApp, Facebook Messenger, Telegram, Viber, and Skype.
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
WhatsMany - Send personalised WhatsApp messages in bulk
Momentum - Agile goal and performance management
Promote Route - A Better WhatsApp™ Experience
RealMailers - Send geo-targeted direct mail to 110M+ homes in the US