Bulk SMS Service in Sri Lanka in Sinhala, Tamil and English
Send OTPs, payment reminders and customer alerts to +94 numbers in Sinhala, Tamil or English. We help register your sender ID with Sri Lankan networks and support you in the same time zone as Colombo.
A bulk SMS service in Sri Lanka sends business messages to +94 mobile numbers under your brand name. The main networks usually need alphanumeric sender IDs registered in advance, and some only accept transactional traffic. We help you register, send in Sinhala, Tamil or English and quote rates in INR or USD.
Same time zone
Our sales hours of 9am to 7pm match Colombo time exactly.
Sinhala and Tamil
Unicode SMS in both national languages, plus English.
Sender ID registration
We guide your registration so messages are not blocked.
Tamil support team
Our Coimbatore team speaks Tamil and English on calls.
A bulk SMS service in Sri Lanka from just across the Palk Strait
Sri Lanka and India share a time zone, and our office in Coimbatore keeps the same 9am to 7pm hours as a Colombo business. Our team speaks Tamil and English, which helps when you are setting up messages for Jaffna, Batticaloa or the hill country estates.
Typical users include microfinance companies sending loan reminders, tea and garment exporters messaging staff, private hospitals in Colombo, tuition classes and tour operators in Galle and Kandy. AvanceZone Technology has worked in bulk SMS since 2000 and sends Sri Lankan traffic through global carrier partners.
Sri Lanka sender ID rules
Sri Lankan networks have moved toward registered sender IDs, and published carrier guidance says unregistered IDs to the main networks will be blocked from July 2026. Rules can change between networks, so we confirm the current position with you during onboarding.
- Alphanumeric sender IDs usually need pre-registration with Dialog, Hutch and other main networks, which can take about three weeks.
- Some networks accept only OTP and transactional traffic on registered IDs, so marketing to those subscribers may be blocked.
- Numeric sender IDs and local long codes are generally not supported for business SMS.
- Two-way replies to an SMS are not usually available, so plan a call-back number or WhatsApp for responses.
- Take opt-in consent for marketing and honour STOP requests quickly.
Writing in Sinhala, Tamil or English
Sinhala and Tamil both use Unicode, which allows 70 characters per SMS part. A short Sinhala payment reminder fits in one or two parts. English fits 160 characters per part and is common for bank-style alerts and OTPs.
Pick the language by region and audience. A plantation company may message estate workers in Tamil, Colombo office staff in English and customers in the south in Sinhala. Keep separate lists so each group gets one clear message instead of three languages squeezed into one.
When WhatsApp works better in Sri Lanka
WhatsApp is popular in Sri Lanka, especially for small business chat and among families with relatives abroad. If you need replies, photos of products or a catalogue, the WhatsApp Business API suits better than one-way SMS. We are a Meta Tech Provider and can run both channels on one account, with SMS as a fallback when WhatsApp does not deliver.
Pricing for Sri Lanka SMS
Sri Lanka SMS is priced per message and quoted by destination, in INR or USD on request. Tell us your expected volume and message types and we will send a written quote with no monthly platform fee.
If you already send SMS in India with us, your Sri Lanka traffic runs on the same login, API key and delivery reports. Remember to store Sri Lankan numbers with +94 and without the leading zero, or messages will fail.
Other countries we send to
We also send SMS and WhatsApp messages to customers abroad, with help on each country's sender ID and consent rules.
How to start in Sri Lanka
Share your sender name
Tell us your brand name, message types and monthly volume.
Register the sender ID
We guide the registration documents for the main Sri Lankan networks.
Test in each language
Send sample Sinhala, Tamil and English messages to your own numbers.
Start sending
Use the API or upload Excel, then review delivery reports by network.
Frequently asked questions
Do I need sender ID registration in Sri Lanka?
In most cases, yes. The main Sri Lankan networks generally require alphanumeric sender IDs to be pre-registered, and published carrier guidance says unregistered IDs to these networks will be blocked from July 2026. Registration usually takes a few weeks. We help you prepare the request during onboarding.
Can I send SMS in Sinhala and Tamil?
Yes. Our gateway supports Unicode, so Sinhala and Tamil display correctly on modern phones. Each Unicode SMS part carries up to 70 characters, compared with 160 for English. Check the part count with our character counter before you send a long message.
Can customers reply to my SMS in Sri Lanka?
Two-way SMS is not generally supported for business traffic into Sri Lanka. If you need replies, add a call-back number in the message or use the WhatsApp Business API, which lets customers chat with your team. We can set up both on the same account.
Can I send promotional SMS to all Sri Lankan networks?
Not always. Some networks accept only OTP and transactional messages on registered sender IDs, so promotions to their subscribers may be blocked. We review your list and message type during onboarding and tell you what to expect on each network.
What does bulk SMS in Sri Lanka cost?
Sri Lanka SMS is charged per message and quoted by destination, in INR or USD on request. Your rate depends on volume and message type. There is no monthly platform fee. Share your expected volume and we will send a quote.
Related pages
Send your first SMS today
From ₹0.15 per delivered SMS, credits valid for a year, and DLT help from a real person.