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The Zeckta Messaging API enables developers and businesses to send transactional SMS messages, bulk campaigns, and OTP notifications at scale. Messages are processed asynchronously and include delivery tracking, reporting, and real-time webhook notifications.

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Key Capabilities

Single SMS

Send individual transactional messages with delivery tracking.

SMS Campaigns

Deliver bulk messages to large recipient audiences.

Sender Names

Register and manage branded sender identities.

Webhooks

Receive real-time delivery notifications.

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Message Types

TypeCharacter LimitEncodingBest For
Plain Text160GSM 03.38Standard notifications
Unicode70UCS-2Non-English languages and emojis
ConcatenatedMultiple segmentsGSM 03.38 / UCS-2Longer messages
Long messages are automatically segmented and reassembled on supported devices.

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Core Endpoints

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Send Single SMS

POST /v1/messaging/sms/messages
Queue an individual SMS message for delivery.

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Get Message Status

GET /v1/messaging/sms/messages/{uuid}
Retrieve the latest delivery status of a message.

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Create Campaign

POST /v1/messaging/sms/campaigns
Create and queue a bulk SMS campaign.

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Get Campaign Report

GET /v1/messaging/sms/campaigns/{uuid}
Retrieve campaign delivery analytics and reporting.

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Message Lifecycle

Every message progresses through a delivery lifecycle. 
queued
  ↓
processing
  ↓
submitted
  ↓
sent
  ↓
delivered
Messages may also transition into terminal states such as: 
failed
expired
undeliverable
rejected
See the Delivery Statuses guide for a complete reference.

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Message Preview

Before sending a message, you can calculate:
  • Message segments
  • Character count
  • Encoding type
  • Billing units
Using: 
GET /v1/messaging/sms/preview

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Workspace Isolation

Messages are isolated at the workspace level. A workspace can only:
  • Send messages using its own API keys
  • View its own messages
  • Access its own campaigns
  • Retrieve its own reports
  • Use its own Sender Names
Cross-workspace access is not permitted.

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Next Steps

Send Single SMS

Learn how to send individual SMS messages.

SMS Campaigns

Learn how to send bulk campaigns.

Sender Names

Register and manage sender identities.

Webhooks

Receive real-time delivery updates.