Yeah - Mailchimp is great! But I'm not sure it's possible to enforce just one email marketing system? Feels like there's always forces to add yet another syste

Yeah - Mailchimp is great! But I'm not sure it's possible to enforce just one email marketing system? Feels like there's always forces to add yet another system. Intercom, for example, brings a nice little chat widget & an integrated email system. This will inevitably result in email subscribe/unsubscribe dynamics - or are we doing something wrong?