SMS API for Saint Lucia: bulk SMS to +1 numbers

Saint Lucia is a Caribbean island nation with Castries as its capital, known for its tourism and agriculture sectors. Software products like travel agencies, resorts, and delivery services send text messages to their users. Messages are triggered by events such as booking confirmations, package deliveries, or event reminders. Developers choose SMS because it works on all mobile phones, including basic models, and is reliable for reaching both locals and tourists.

Saint Lucia

Calling code +1

Per SMS segment
$0.02207
Messages for $100
4,531
Local language
English
Encoding
GSM-7

What a bulk SMS send to Saint Lucia costs

Every message is priced at $0.02207 per segment to Saint Lucia. 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$0.02207$0.04414
1,000$22.07$44.14
10,000$220.70$441.40
100,000$2,207.00$4,414.00

Number format in Saint Lucia

Saint Lucia uses the North American Numbering Plan: +1, a three-digit area code and a seven-digit number, such as +1 758 284 5678. The API reads the area code (758 here) to price the number as Saint Lucia 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 Lucia 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 Lucia keeps UTC-4 all year with no clock change, so 09:00 in St Lucia 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 Lucia with one request

The answer comes back at once with the message id, the country the number was matched to (LC) 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": "+17582845678", "text": "Your Northwind code is 482913. It expires in 10 minutes."}'

What developers send to Saint Lucia

Common integrations that call the SMS API for recipients in Saint Lucia.

Booking confirmations

Resorts in Soufrière send SMS confirmations to guests with details about their stay and check-in times.

Delivery updates

Delivery services notify customers in Castries with SMS alerts when their packages are out for delivery.

Event reminders

Event organizers send SMS reminders to attendees in Gros Islet about upcoming concerts or festivals.

Tour updates

Tour companies in Vieux Fort send SMS notifications to participants about changes to tour schedules.

SMS to Saint Lucia: questions

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

How much does it cost to send bulk SMS to Saint Lucia?

Each message segment to Saint Lucia costs $0.02207. A plain text of up to 160 characters is one segment, so 1,000 one-segment messages cost $22.07 and 10,000 cost $220.70. Failed messages are refunded to the balance.

How many SMS to Saint Lucia does a $100 top-up send?

$100 covers about 4,531 one-segment messages to Saint Lucia at $0.02207 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 Lucia numbers for the API?

Send them in international format with the plus sign: +1 758 284 5678 becomes "+17582845678" 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.

Should messages be in English or Creole?

English is widely understood and preferred for formal communication. Creole can be used for informal or local contexts.

How to reach tourists effectively?

Use SMS for time-sensitive updates, as tourists often rely on their phones for travel information and alerts.

Start sending to Saint Lucia

Create an account, top up from $40 and send to Saint Lucia at $0.02207 per segment, from the console or with one API call.

SMS API Saint Lucia: Bulk SMS to +1 From $0.02207 | BulkSMSAPI