From a customer contact point of view, an option to send bulk email seems like a logical addition.
Not comparable with a mail chimp, but the normal admission as you could via an O365.
Because customers will respond to this, you must indicate in the email channel that each conversation / reply must open a new ticket. But in this way you could also perfectly send your customer contact from this via a reception or marketing service. When your CRM is then linked to Trengo, you can also keep track of who responds to these types of emails.