Crisp

This very useful app for helping us stay closed with our customers. Can work offline and online while still sending notifications, and forwarded to an email if there is no answer. Live chat with customers more interactive with Gif, Smyle, file sharing, etc. Crisp can also be integrated with FB messenger and Telegram, Email, and private SMS, Zendeks, Slack.

With a fresh and modern interface, your team will thrive thanks to this efficient, easy-to-use tool. Crisp supports working hours as well, so that your employees won’t be notified outside of their working hours. You can also send private notes to make sure that information does not disappear, and be notified and see what your colleagues are writing. Source