SMS API for Sao Tome and Principe: bulk SMS to +239 numbers
Sao Tome and Principe
Calling code +239
- Per SMS segment
- $0.07097
- Messages for $100
- 1,409
- Local language
- Portuguese
- Encoding
- GSM-7 or Unicode
What a bulk SMS send to Sao Tome and Principe costs
| Messages | 1 segment | 2 segments |
|---|---|---|
| 1 | $0.07097 | $0.14194 |
| 1,000 | $70.97 | $141.94 |
| 10,000 | $709.70 | $1,419.40 |
| 100,000 | $7,097.00 | $14,194.00 |
Number format in Sao Tome and Principe
Mobile numbers in Sao Tome and Principe have 7 digits after +239 and no trunk prefix, so the local form 981 2345 becomes +239 981 2345 in the to field.
Alphabet and segments
Texts in Portuguese fit 160 GSM-7 characters per segment until they use á, â, ã, ç, ê, í, ó, ô, õ and ú: those letters are outside GSM-7 and turn the message into Unicode at 70 characters per segment (67 per part). For short alerts, write them without those letters to keep one segment; for longer texts, the console names each letter that changed the encoding.
Time zone and timing
Sao Tome and Principe keeps UTC+0 all year with no clock change, so 09:00 in Sao Tome is always 09:00 UTC. send_at takes UTC or any ISO 8601 offset, and the console scheduler converts from your own time zone.
Send to Sao Tome and Principe with one request
The answer comes back at once with the message id, the country the number was matched to (ST) 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": "+2399812345", "text": "Your Northwind code is 482913. It expires in 10 minutes."}'const res = await fetch("https://bulksmsapi.cc/v1/messages", {
method: "POST",
headers: { Authorization: `Bearer ${process.env.BULKSMSAPI_KEY}`, "Content-Type": "application/json" },
body: JSON.stringify({ to: "+2399812345", text: "Your Northwind code is 482913. It expires in 10 minutes." }),
});
console.log(await res.json()); // price: "0.07097", country: "ST"import json, os, urllib.request
req = urllib.request.Request(
"https://bulksmsapi.cc/v1/messages",
data=json.dumps({"to": "+2399812345", "text": "Your Northwind code is 482913. It expires in 10 minutes."}).encode(),
headers={"Authorization": "Bearer " + os.environ["BULKSMSAPI_KEY"], "Content-Type": "application/json", "User-Agent": "northwind-app/1.0"},
method="POST",
)
with urllib.request.urlopen(req) as res:
print(json.load(res)["price"]) # "0.07097"What developers send to Sao Tome and Principe
Booking confirmations
A hotel in São Tomé texts a guest to confirm their reservation for a beachfront room.
Payment reminders
A bank sends a text to a customer in Neves reminding them of an overdue loan payment.
Event alerts
A cultural festival organizer notifies attendees in Trindade of a schedule change via SMS.
More countries in West and Central Africa
SMS to Sao Tome and Principe: questions
More answers on accounts, payments and the API are in the FAQ.
How much does it cost to send bulk SMS to Sao Tome and Principe?
How many SMS to Sao Tome and Principe does a $100 top-up send?
How do I write Sao Tome and Principe numbers for the API?
Should SMS messages be in Portuguese or English?
How does SMS perform on Príncipe Island?
Start sending to Sao Tome and Principe
Create an account, top up from $40 and send to Sao Tome and Principe at $0.07097 per segment, from the console or with one API call.