What are the best chat based messaging apps used for customer service?

Looking for possibilities to use chat messaging apps to interact with our customers ! Ideally, the app can be integrated into ZenDesk!
Emily Kellerttech lover & travel freak · Asked
1
Slack

Be less busy. Real-time messaging, archiving & search.

We use private slack channels for our customers. You can create a private channel that is just the customer team and your team. It has been a great way to drive customer engagement, handle support issues (bonus: support issues are a great way for the entire client team to see that a) you are attentive and b) you often only have to answer it once ).
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