SMS API for Saint Kitts and Nevis: bulk SMS to +1 numbers

Saint Kitts and Nevis, with Basseterre as its capital, is a Caribbean nation known for its tourism industry and growing digital services. Software products like travel agencies, banking apps, and e-commerce platforms send text messages to their users. These messages are triggered by events such as booking confirmations, account updates, or order changes. SMS is chosen because it reaches every mobile phone, works without internet, and is read quickly, making it reliable for both residents and visitors.

Saint Kitts and Nevis

Calling code +1

Per SMS segment
$0.00957
Messages for $100
10,449
Local language
English
Encoding
GSM-7

What a bulk SMS send to Saint Kitts and Nevis costs

Every message is priced at $0.00957 per segment to Saint Kitts and Nevis. Texts over 160 GSM-7 or 70 Unicode characters are split into segments, so a two-segment text costs twice as much.
Messages1 segment2 segments
1$0.00957$0.01914
1,000$9.57$19.14
10,000$95.70$191.40
100,000$957.00$1,914.00

Number format in Saint Kitts and Nevis

Saint Kitts and Nevis uses the North American Numbering Plan: +1, a three-digit area code and a seven-digit number, such as +1 869 765 2917. The API reads the area code (869 here) to price the number as Saint Kitts and Nevis rather than the United States, so keep the full eleven digits in your list.

Alphabet and segments

English text stays inside the GSM-7 alphabet, so one segment to Saint Kitts and Nevis holds 160 characters and each part of a longer text 153. Watch for curly quotes and emoji copied from other tools: one of them moves the whole text to Unicode at 70 characters per segment, and POST /v1/estimates shows the encoding before you send.

Time zone and timing

Saint Kitts and Nevis keeps UTC-4 all year with no clock change, so 09:00 in St Kitts is always 13:00 UTC. send_at takes UTC or any ISO 8601 offset, and the console scheduler converts from your own time zone.

Send to Saint Kitts and Nevis with one request

The answer comes back at once with the message id, the country the number was matched to (KN) and the price. A delivered or failed event follows on your webhook, and a failed message is refunded.

For a list, send the same text to up to 10,000 numbers with POST /v1/batches, or a personal text per number in messages.

curl https://bulksmsapi.cc/v1/messages \
  -H "Authorization: Bearer $BULKSMSAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"to": "+18697652917", "text": "Your Northwind code is 482913. It expires in 10 minutes."}'

What developers send to Saint Kitts and Nevis

Common integrations that call the SMS API for recipients in Saint Kitts and Nevis.

Booking confirmations

A travel agency in Basseterre sends SMS with hotel booking details and travel itineraries.

Banking alerts

A bank in Charlestown sends a text when a user's account balance changes significantly.

Order updates

An e-commerce store in Sandy Point texts customers when their order is shipped.

Appointment reminders

A clinic in Dieppe Bay texts reminders for upcoming medical appointments.

SMS to Saint Kitts and Nevis: questions

More answers on accounts, payments and the API are in the FAQ.

How much does it cost to send bulk SMS to Saint Kitts and Nevis?

Each message segment to Saint Kitts and Nevis costs $0.00957. A plain text of up to 160 characters is one segment, so 1,000 one-segment messages cost $9.57 and 10,000 cost $95.70. Failed messages are refunded to the balance.

How many SMS to Saint Kitts and Nevis does a $100 top-up send?

$100 covers about 10,449 one-segment messages to Saint Kitts and Nevis at $0.00957 each. The first top-up adds a bonus on top, which raises that number. The balance is shared by every country, so the same top-up also pays for messages anywhere else on the list.

How do I write Saint Kitts and Nevis numbers for the API?

Send them in international format with the plus sign: +1 869 765 2917 becomes "+18697652917" in the to field. The API also accepts spaces, dashes and a 00 prefix and cleans them, and numbers that cannot be read are listed in set_aside instead of being charged.

Which language should we use for SMS in Saint Kitts and Nevis?

English is the primary language and is widely used for business communication.

Are there seasonal peaks in SMS traffic?

Yes, during the tourist season and holidays like Christmas, there is increased activity in travel and retail sectors.

Start sending to Saint Kitts and Nevis

Create an account, top up from $40 and send to Saint Kitts and Nevis at $0.00957 per segment, from the console or with one API call.

SMS API Saint Kitts and Nevis: Bulk SMS to +1 From $0.00957 | BulkSMSAPI