SMS credits
1 credit = 1 SMS. Buy with MoMo; sending deducts from your balance.
You need a positive credit balance before the API or dashboard will send. Buy under Dashboard → SMS → Credits.
How to buy
- Open Credits and pick a plan, or enter a custom credit amount.
- Pay with MoMo on Waaguan checkout (same pay flow as payments).
- When payment confirms, credits are added to your SMS balance automatically.
Spending
- Each recipient costs 1 credit.
- If the send fails before delivery is queued, credits are refunded.
- API returns
402withInsufficient SMS creditswhen the balance is too low.