is the best, better use it
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Facebook Messenger - Facebook Messenger is a faster way to message.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.