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SMS Delivery Reports

SMS Delivery Reports

Profile Headshot of Mehak Dhingra
Mehak Dhingra

4
mins read

June 28, 2024

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Key Takeways

What is an SMS Delivery Report?

There are multiple reasons and quite a lot of times when text messages do not get delivered. This is the situation where an SMS delivery report comes to the rescue.

An SMS Delivery Report, also known as a delivery receipt (DLR), is a notification sent back to the sender (usually a business or service provider) confirming the delivery status of an SMS message.

It informs the sender whether the message has been successfully delivered to the recipient’s mobile device or if it encountered any issues during transmission. The SMS delivery report is available for both P2P and A2P messaging.

How SMS Delivery Reports Work in A2P Messaging?

When an SMS message is sent, it travels through a series of steps before reaching the recipient. Here’s a simplified process of how an SMS delivery report is generated:

  1. Message Submission: The sender composes an SMS and submits it to the SMS gateway or SMS service provider.
  1. Routing: The SMS gateway processes the message and forwards it to the recipient’s mobile network.
  1. Delivery Attempt: The recipient’s mobile network attempts to deliver the message to the recipient’s mobile device.
  1. Delivery Report Generation: Once the delivery attempt is made, the mobile network generates a delivery report indicating the success or failure of the delivery attempt.
  1. Notification: The delivery report is sent back to the SMS gateway, which then relays the information to the sender in an SMS dashboard.

How SMS Delivery Reports Work in P2P Messaging?

The SMS delivery report would vary depending on which operating system do you use – iOS or Android.  

An Android user can go to: -

Settings>> Text messages>> Toggle SMS delivery reports on or off

An iOS user can turn the read receipts on or off according to their preference. To enable the same, iPhone users can go to: -

Settings>> Messages>> Toggle Send read receipts on or off

Types of Delivery Reports

Delivery reports can provide various types of information, including:

  1. Delivered: The message was successfully delivered to the recipient’s mobile device.
  1. Failed: The message could not be delivered due to issues such as an invalid phone number, the recipient’s phone being switched off, or network problems.
  1. Pending: The delivery attempt is still in progress, often due to temporary network issues or the recipient’s device being temporarily unreachable.
  1. Rejected: The message was rejected by the recipient’s mobile network, possibly due to spam filters or other restrictions.

You can also head to our detailed coverage of text delivery statuses for a better understanding of this particular topic.

What is the Need for SMS Delivery Reports?

SMS delivery reports offer several key benefits:

  1. Confirmation of Receipt: They provide confirmation that messages have been delivered successfully, ensuring that recipients receive important notifications or alerts.
  1. Error Detection and Troubleshooting: Delivery reports can help identify issues in the delivery process, such as invalid numbers, network problems, or DND texts, allowing for timely troubleshooting and resolution.
  1. Campaign Performance Monitoring: For marketing and promotional campaigns, delivery reports help measure the effectiveness of SMS campaigns by providing data on delivery rates and identifying potential issues.
  1. Compliance and Accountability: In regulated industries, delivery reports serve as proof of message delivery, aiding in compliance with legal and regulatory requirements.

Limitations and Considerations of SMS Delivery Reports

While SMS delivery reports are highly useful, there are a few limitations and considerations to keep in mind:

  1. Network Dependencies: The accuracy and reliability of delivery reports depend on the recipient’s mobile network. Some networks may not support delivery reporting or may provide incomplete information.
  1. Cost: Some SMS service providers may charge extra for delivery reports, impacting the overall cost of SMS campaigns.
  1. Delay: There can be delays in receiving delivery reports, especially in cases of network congestion or technical issues.

SMS Messaging with Message Central

Message Now by Message Central is an SMS API provider. The platform provides:

  1. Global reach  
  1. Direct connectivity with telecom operators
  1. The Best SMS routes
  1. Competitive SMS rates
  1. Real time analytics and reports

You can get in touch with the team at Message Central to get started.

Conclusion

SMS delivery reports are a vital tool for ensuring the success and reliability of SMS communications. They provide valuable insights into the status of sent messages, helping businesses and service providers confirm receipt, identify and troubleshoot issues, and measure the effectiveness of their SMS campaigns.  
By understanding and utilizing SMS delivery reports, businesses can enhance their communication strategies and improve overall customer engagement.

Frequently Asked Questions

How do I choose the right OTP service provider?

When selecting an OTP SMS service provider, focus on:

  • Delivery reliability and speed
  • Global coverage and local compliance
  • Multi-channel support and fallback
  • Ease of integration
  • Pricing transparency

The right provider should not just send OTPs but ensure they are delivered consistently across regions and networks.

Not all OTP SMS service providers are built the same.

Some optimize for cost, others for flexibility but very few balance delivery reliability, global coverage and ease of use. And that balance is what actually impacts whether your users receive OTPs on time.

If OTP is critical to your product, focus on:

  • reliable delivery (not just sending)
  • multi-channel fallback
  • scalability across regions

Try It for Yourself

Why is multi-channel OTP important?

Relying only on SMS can lead to failed verifications due to:

  • network issues
  • telecom filtering
  • device limitations

Multi-channel OTP systems (SMS + WhatsApp + voice) improve success rates by automatically retrying through alternative channels if one fails.

What is the best OTP SMS service provider in India?

Some of the commonly used OTP SMS service providers in India include MSG91, Exotel and 2Factor.

That said, India has additional challenges like DLT compliance and operator filtering. Platforms that handle these internally while also offering fallback options tend to provide more consistent OTP delivery.

Which is the cheapest OTP service provider?

Providers like Fast2SMS and 2Factor are often considered among the cheapest OTP service providers, especially in India.

However, lower pricing can come with trade-offs such as:

  • lower route quality
  • higher delivery delays
  • limited fallback options

For mission-critical OTP flows, reliability often matters more than just cost.

Which is the best OTP service provider in 2026?

The best OTP service provider depends on your use case.

  • For global scale and flexibility: Twilio, Infobip
  • For cost-effective APIs: Plivo
  • For India-focused SMS OTP: MSG91, Exotel

However, platforms like Message Central stand out by balancing global coverage, multi-channel fallback and ease of deployment, making them suitable for businesses that prioritize delivery reliability.

What is an OTP service provider?

An OTP service provider enables businesses to send temporary verification codes to users via channels like SMS, WhatsApp or voice to authenticate logins, transactions or sign-ups.

Modern OTP SMS service providers go beyond just sending messages, they ensure reliable delivery using optimized routing, retries and sometimes multi-channel fallback.

Ready to Get Started?

Build an effective communication funnel with Message Central.

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