SMS campaigns
Templates, DLT routing, sender IDs, delivery reports, scheduling, and retries.
6 articles
Transactional vs promotional SMS — what's the difference?
India's TRAI regulations force you to pick a category up front. Picking wrong gets your traffic blocked.
4 min readUpdated 20 Feb 2026How sender headers and template IDs work
Every outbound SMS carries a six-character header and a 19-digit template ID that both have to match your DLT record.
3 min readUpdated 22 Feb 2026What do SMS delivery statuses actually mean?
SUBMITTED, DELIVERED, FAILED, EXPIRED — the statuses you see are a standardisation of operator DLRs.
4 min readUpdated 24 Feb 2026How do I get a six-character sender ID?
You pick the header, the operator assigns the availability, DLT records it for you.
3 min readUpdated 25 Feb 2026How many characters fit in a multilingual SMS?
English SMS fits 160 chars. Hindi and regional scripts fit 70. This is an operator limit, not ours.
3 min readUpdated 26 Feb 2026Scheduling and throttling bulk campaigns
For promotional sends above 50k recipients, throttle the send so your inbound hotline doesn't melt.
3 min readUpdated 27 Feb 2026
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