In terms of machine learning courses in an English co domain, you might want to consider creating a dedicated website or microsite for this purpose. This site can include detailed course descriptions, instructor bios, testimonials from previous students, and links to register for upcoming classes.

As for SMS service, it could be used as a tool for communication between the instructors and students, sending reminders about class times or deadlines, or even delivering some coursework directly via text message.

Rope might seem like an odd fit here, but if we interpret "rope" metaphorically, it could refer to the idea of binding together different parts of your educational offering. For example, you might offer both online courses and in-person workshops; these would be two separate strands that you need to "tie together" to create a cohesive whole.

Finally, smart home technology (which I'm interpreting as synonymous with "smart living") could potentially play a role in the education process as well. If you're teaching topics related to automation or artificial intelligence, for instance, having hands-on experience with smart devices could be a valuable part of the curriculum.

Regarding opinions on using these elements within an English co domain, my advice would be to make sure everything stays focused and relevant to the main goal: providing high-quality education in machine learning. While innovation and experimentation are important, don't let peripheral concepts distract from your core mission.