Everything you need to know about Landomas SMS API - from integration to compliance
Yes, Landomas is fully GDPR and DPA compliant. We implement strict data protection measures including encrypted transmission (TLS 1.3), minimal data retention policies, secure data processing agreements, and full audit trails for all messaging activities. We never share customer data with third parties and provide tools for data deletion requests. Our data centers are located in GDPR-compliant regions, and we provide Data Processing Agreements (DPA) upon request.
We support Bearer token authentication (JWT) and HMAC signature verification for all API requests. All communications must use HTTPS/TLS 1.3. Additional security features include IP whitelisting, rate limiting, and API key rotation. You can manage multiple API keys with different permission levels from the dashboard. Each API key can be scoped to specific endpoints and actions for enhanced security.
We implement multiple layers of security: all data is encrypted in transit with TLS 1.3 and at rest with AES-256 encryption. Access controls are enforced with role-based permissions. Our infrastructure undergoes regular security audits and penetration testing. We maintain comprehensive audit logs of all API activity. Database backups are encrypted and stored in geographically redundant locations. We follow industry best practices for secure coding and infrastructure management.
We store message metadata (recipient, timestamp, delivery status) for 90 days for delivery reporting and troubleshooting purposes. Message content is retained for only 7 days by default and can be configured for shorter retention periods upon request. After the retention period, all data is permanently deleted. Enterprise customers can request custom retention policies or immediate deletion after delivery confirmation.
Yes, we are SOC 2 Type II certified. Our SOC 2 report covers security, availability, and confidentiality. We undergo annual audits by independent third-party auditors. Enterprise customers can request a copy of our SOC 2 report under NDA. We also maintain ISO 27001 certification for information security management.
Pricing is pay-as-you-go based on destination country. US messages cost $0.0045 per SMS segment (160 characters). International pricing ranges from $0.0040 to $0.0080 per segment depending on the country. There are no monthly fees, setup costs, or hidden charges. You only pay for successfully delivered messages. Volume discounts are available for customers sending 1M+ messages per month.
We accept major credit cards (Visa, Mastercard, American Express), debit cards, Stripe payments, and cryptocurrency (Bitcoin, Ethereum, USDT). All payments are processed securely through our payment partners. We do not store credit card information on our servers. Auto-recharge can be enabled to automatically top up your account when the balance falls below a threshold you set.
No, you are only charged for successfully delivered messages. If a message fails to deliver due to an invalid number, carrier rejection, or network issues, you are not charged. Our system automatically validates phone numbers before sending to prevent charges for obviously invalid numbers. You can view detailed billing reports showing only delivered messages in your dashboard.
Yes, we offer volume discounts for high-usage customers. Discounts typically start at 1 million messages per month with increasing tiers for higher volumes. Enterprise customers can negotiate custom pricing based on their projected usage and commitment terms. Contact our sales team to discuss volume pricing options tailored to your needs.
No, your account credits never expire. Once you add funds to your account, they remain available until used. This applies to both purchased credits and promotional credits from your free trial. You can use your credits at any time without worrying about expiration dates or time limits.
Unused credits can be refunded within 30 days of purchase, minus any messages already sent. To request a refund, contact our billing team with your account details. Refunds are processed within 5-7 business days to your original payment method. Note that free trial credits are not eligible for refund as they are promotional.
We guarantee 99.9% API uptime with enterprise-grade infrastructure. Our platform is hosted on redundant servers across multiple geographic regions with automatic failover. Real-time status monitoring is available at status.landomas.com. SLA credits are automatically applied for any downtime exceeding our guarantee. We maintain 24/7 monitoring and incident response teams.
Common reasons for delivery failures include:
Check the delivery status endpoint or webhook response for specific error codes and details.
401 errors indicate an authentication problem. Common causes: (1) Incorrect API key - verify you're using the correct key from your dashboard, (2) Missing Authorization header - ensure your request includes "Authorization: Bearer YOUR_API_KEY", (3) Expired or revoked API key - generate a new key if needed, (4) Incorrect API endpoint URL. Double-check your authentication setup against our documentation.
Delays can occur due to: (1) High volume periods - carrier networks may be congested, (2) Carrier-side throttling - some carriers limit message throughput, (3) International routing - cross-border messages may take longer, (4) Retry attempts - our system may be retrying failed deliveries. Check status.landomas.com for any service incidents. Most delays resolve within minutes. For time-critical messages, use our priority queue feature.
Our platform is designed specifically for transactional messages (alerts, notifications, OTPs). Marketing or promotional messages require different compliance and opt-in mechanisms. We recommend using dedicated marketing SMS platforms for promotional campaigns to ensure compliance with local regulations like TCPA (USA), CAN-SPAM, and carrier policies. Sending marketing messages through transactional routes may result in account suspension.
We offer 24/7 technical support through multiple channels:
Our team is here to help you get started with Landomas SMS API