SMS API for Hong Kong: bulk SMS to +852 numbers

Hong Kong is a special administrative region on China's south coast and one of Asia's main centres for finance, trade and logistics. Software products like banking apps, e-commerce platforms, and logistics services send text messages to keep users informed. Messages are triggered by events such as transaction confirmations, delivery updates, and appointment reminders. SMS is chosen for its universal reach, ensuring messages are read quickly even in a fast-paced city where people rely on their phones for daily tasks.

Hong Kong

Calling code +852

Per SMS segment
$0.01247
Messages for $100
8,019
Local language
Cantonese Chinese and English
Encoding
Unicode (UCS-2)

What a bulk SMS send to Hong Kong costs

Every message is priced at $0.01247 per segment to Hong Kong. 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$0.01247$0.02494
1,000$12.47$24.94
10,000$124.70$249.40
100,000$1,247.00$2,494.00

Number format in Hong Kong

Mobile numbers in Hong Kong have 8 digits after +852 and no trunk prefix, so the local form 5123 4567 becomes +852 5123 4567 in the to field.

Alphabet and segments

Text in traditional Chinese characters is always Unicode, so a message to Hong Kong written in Cantonese Chinese carries 70 characters in one segment and 67 in each part of a longer one. Codes and alerts written in English or plain Latin letters fit 160 characters, which halves the cost of a long notice.

Time zone and timing

Hong Kong keeps UTC+8 all year with no clock change, so 09:00 in Hong Kong is always 01:00 UTC. send_at takes UTC or any ISO 8601 offset, and the console scheduler converts from your own time zone.

Send to Hong Kong with one request

The answer comes back at once with the message id, the country the number was matched to (HK) 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": "+85251234567", "text": "Your Northwind code is 482913. It expires in 10 minutes."}'

What developers send to Hong Kong

Common integrations that call the SMS API for recipients in Hong Kong.

Bank alerts

Banks in Hong Kong send SMS alerts for every transaction, ensuring customers in Central or Kowloon are immediately aware of account activity.

Delivery updates

Logistics companies notify customers in Tsim Sha Tsui or Sha Tin when their parcels are out for delivery or delayed.

Appointment reminders

Clinics in Wan Chai or Mong Kok send SMS reminders to patients about upcoming doctor visits or test results.

Event tickets

Event organizers confirm ticket bookings for concerts at the Hong Kong Coliseum or exhibitions at the Convention Centre via SMS.

SMS to Hong Kong: questions

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

How much does it cost to send bulk SMS to Hong Kong?

Each message segment to Hong Kong costs $0.01247. A plain text of up to 160 characters is one segment, so 1,000 one-segment messages cost $12.47 and 10,000 cost $124.70. Failed messages are refunded to the balance.

How many SMS to Hong Kong does a $100 top-up send?

$100 covers about 8,019 one-segment messages to Hong Kong at $0.01247 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 Hong Kong numbers for the API?

Send them in international format with the plus sign: +852 5123 4567 becomes "+85251234567" 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 Chinese?

Messages are typically sent in both English and Traditional Chinese to cater to Hong Kong's bilingual population.

How do I reach visitors and expatriates?

SMS works for all mobile users in Hong Kong, including visitors and expatriates. It is a reliable way to communicate with temporary residents.

Start sending to Hong Kong

Create an account, top up from $40 and send to Hong Kong at $0.01247 per segment, from the console or with one API call.

SMS API Hong Kong: Bulk SMS to +852 From $0.01247 | BulkSMSAPI