What is the mailchimp for chatbots?

Searching for a platform to manage the created bots, something like mailchimp does, sending messages and getting reports

I would say it’s ManyChat. Allows for very simple broadcasting, segmentation, and sequences.

Can you connect the page to ManyChat but still act as you programmed the bot?

Oh, so you’re just looking for a broadcast-feature for your custom bot? That’s not possible with ManyChat, as far as I know

Exactly.

But is it not something that developers or agencies will need when developing a bot from scratch and sold to a customer?

Probably, but I figure most custom solutions create that functionality from scratch as well and integrate it into existing CMS, ideally.

But maybe some functionality like this will be added to bot development frameworks in the future.