RBM (RCS Business Messaging) message limits in India, there are two different limits to distinguish:


1. Promotional message frequency / quality limits

Google currently applies promotional traffic limits based on the agent's reputation over a rolling 28-day period:

Agent reputationInitial promotional messages to the same user / 28 daysUnique users / 28 days
Low (new agents start here)21 million
Medium425 million
High8300 million

Replies to user-initiated messages are exempt from these limits.

For India, businesses can initiate conversations only between 7 AM and 10 PM.



2. Message content size

For an individual RBM message:

  • Text: maximum 3,072 characters
  • Entire AgentMessage: maximum 250 KB
  • A media/PDF file: maximum 100 MiB
  • Combined media + PDFs in one message: maximum 100 MiB 




160 UTF-8 characters is the threshold used for the Basic Message billing event; longer text or rich content can fall into the Single Message category.