One API for SMS and WhatsApp across Bangladesh.
Programmable messaging with per-message delivery reports, 99.9% uptime, and billing in Tk . Integrate over REST in minutes and scale to millions of messages.
Two channels, one integration.
Reach customers on the numbers they already trust. Send from the same API, track from the same dashboard.
SMS API
Transactional and promotional SMS with masking, unicode & Bangla support, and DLR callbacks on every message.
- ✓Sender ID masking & branded senders
- ✓Bangla & unicode, long-SMS concatenation
- ✓Per-message delivery receipts
WhatsApp Business API
Verified green-tick sender, approved templates, media & buttons, and two-way conversations your team can reply to.
- ✓ Official verified business profile
- ✓ Template management & approval
- ✓ Rich media & interactive buttons · two-way inbox soon
Delivery reports
A DLR callback for every message with status, operator and timestamp — no polling required.
Signed webhooks
Inbound messages and status changes pushed to your endpoint, HMAC-signed and retried.
OTP & 2FA
Generate, send and verify one-time passcodes with automatic SMS-to-WhatsApp fallback.
Two-way messaging
Receive replies on both channels and route them to your app or shared team inbox.
SDKs & sandbox
First-party libraries for Node, PHP, Python and Go, plus free sandbox keys for testing.
Dashboard & logs
Searchable message logs, real-time analytics and per-sender spend, all billed in Tk .
One REST endpoint. Every channel.
Idempotent sends, signed webhooks for delivery status, and first-party SDKs. Test with sandbox keys, ship the same code to production.
# send a message curl -X POST https://api.sendlime.com/v1/messages \ -H "Authorization: Bearer $SL_KEY" \ -d channel=sms \ -d to=01780000000 \ -d from=Sendlime \ -d text="Your OTP is 481920" # 200 OK { "id": "msg_9f2a", "status": "queued" }
Live in three steps.
Create an account
Sign up and get Tk 10 in trial credit. No card, no setup fee.
Register a sender
Add a masking sender ID or verify your WhatsApp business profile.
Send your first message
Call the API or use the dashboard. Watch delivery reports in real time.
Simple pricing.
SMS is pay-as-you-go per message. WhatsApp runs on a flat subscription with unlimited messages.
DLR & Bangla included. Billed per message, no monthly fee.
Start sendingOnly pay for what you send
No setup fees and no monthly minimums on SMS. Every message returns a delivery report. Sending high prepaid volume and want committed rates?
Talk to sales for custom pricing →Unlimited messages from your own verified number. Longer terms cost less per month.
Questions, answered.
You can start on shared masking senders immediately. Branded sender IDs and high-volume routes are approved within one business day.
Start sending in minutes.
Create a free account and get Tk 10 in trial credit. Ship your first message today.
Programmable SMS & WhatsApp messaging for Bangladesh.