Most government messaging in India is still sent in English. A scheme awareness SMS that lands in the phone of a farmer in rural Odisha in English is functionally undelivered. The citizen sees a text they cannot read and ignores it. The department's scheme uptake number stays low, and nobody in Delhi understands why the outreach failed. Regional-language messaging is not a nice-to-have. It is the difference between the scheme reaching the beneficiary and the scheme sitting on a portal that no one visits.
Sender ID whitelisting is the second wall. Every operator has anti-spam filters that heavily downrank unfamiliar 6-character IDs. A newly-registered department header can see 20 to 40 percent delivery drops in the first 30 days as reputation builds. Emergency messages (a cyclone advisory, an election duty alert) sent from an untested sender ID can miss the recipients who need it most. Pre-warmed government IDs with operator-side priority routing solve this, but it takes coordination and paperwork most departments do not have the bandwidth for.
Then there is state-scale volume. When the Election Commission needs to reach every voter in a state, or IMD issues a cyclone warning to Odisha, or the health ministry alerts every senior citizen in Kerala for a vaccination drive, the volume can hit 5 to 20 crore messages in a single window. Standard vendor infra chokes at 500 TPS. Operator MSCs congest. Delivery drops below 60 percent within the first hour. The message that was supposed to save lives sits in a queue.