When you mentioned telegram, i was going to suggest trying out the matrix protocol. The protocol itself is not only designed for chat, that is merely only one a

When you mentioned telegram, i was going to suggest trying out the matrix protocol. The protocol itself is not only designed for chat, that is merely only one admittedly popular use-case. And in conjunction with matrix, i was going to further suggest try to leverage a different transport layer that has lowerr latency instead of current http...which i know matrix org was testing out some time ago...But, then...you said you wanted a SaaS...which i'm not aware of any that exist for your use case. So, maybe try a Saas for Mqtt, etc.