Easy Messenger ‑ Live Chat

Easy Messenger allows you to provide real-time support via Live Chat based on Facebook Messenger.

Pros:

• It's easy to install and straightforward to use. 
• You can customize the widget appearance. 
• It has a free plan. 

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Cons:

• It's a very basic, barebones solution. 
• The app may not always work perfectly on mobile. 
• There are some issues reported with notifications showing up, which defeats the purpose of a live chat.