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Free SMS APIs
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List of Top SMS APIs to Send Text Messages (Updated for 2023)
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Telesign SMS Verify product card
Telesign SMS Verify
Delivers patented phone-based verification and two-factor authentication using a time-based, one-time passcode sent over SMS
Verified
✓
Official
Official
0.4
430 ms
2%
PhoneNumberValidateFree product card
PhoneNumberValidateFree
Free and easy. Validate any phone number, from any country. Get type of number (for example, fixed line or mobile), the location of the number, and also reformat the number into local and international dialing formats.
9.7
539 ms
98%
Inteltech SMS product card
Inteltech SMS
Intelligent Technologies SMS API. Allows sending and receiving of SMS messages. An account is required. Sign up for free at http://inteltech.com.au Send messages to any country in the world.
9.4
863 ms
100%
D7SMS product card
D7SMS
Unlock boundless connectivity with D7API Gateway, seamlessly connecting you to the world’s vast messaging network through D7’s exclusive network access
Verified
✓
9.5
192 ms
100%
D7 Verify product card
D7 Verify
Elevate your verification (OTP) process to new heights with D7 Verifier API – the ultimate solution for 2FA!
Verified
✓
9.4
180 ms
100%
sms77io product card
sms77io
Send SMS & text-to-speech messages, perform phone number lookups and much more via seven.io.
9.3
710 ms
100%
ClickSend SMS product card
ClickSend SMS
Sign up for a free account at https://clicksend.com ClickSend is not a free service. Pricing can be found here https://clicksend.com/?r=pricing/
9.2
1,439 ms
100%
SMSAPI.com product card
SMSAPI.com
Powerful and easy SMS communication at your fingertips!
2.4
1,075 ms
100%
Afilnet SMS product card
Afilnet SMS
This API offers you connection with Afilnet services to send SMS and Bulk SMS campaigns
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About this Collection:
SMS API
About SMS APIs
Businesses worldwide are transitioning and embracing several digital strategies to communicate with their clients and remain competitive in their respective fields. To effectively communicate, there is a great need to send information that is short, relevant, and with a broad reach. The businesses achieve this through the use of secure SMS APIs.
What is SMS APIs
An SMS API is a program that can activate the necessary codes that are essential to develop, send and receive messages through devices that support the technology. SMS APIs are functional across different mobile platforms and operating systems. The API gives the developers the ability to review, send and receive messages and check the status of the messages that have been sent. Their functional abilities allow them to provide access to responses without the need to get any authentication.
How SMS APIs Work
When a request is initiated to the API, it asks for a URL that contains the required information. This information includes the phone number, name and identification of the user and those of the sender. The API then sends the request through the short message services gateway server. The gateway server verifies that the parameters that have been set and specified are accurate before processing the request. A response is sent back for the request once it has been executed.
Users of the SMS API
The users of this API are mostly companies and businesses that need to communicate with their clients frequently. The APIs are used to promote products and services to consumers. The secure SMS API provides a confidential and secure means to transfer this information between them and the consumers. They also use this API to send notifications in case of changes to their services or terms that may affect the client base.
Benefits
The API allows for the sending of messages in bulk to several clients simultaneously across networks and connections.
The API is also beneficial because it provides an easy way to monitor SMSs as they are being transmitted. This information is critical for the businesses and organizations as they can create an audit trail and check for errors to understand their causes and employ recovery mechanisms.
The API helps in SMS tagging, which helps to ensure that every response that is being sent outmatches the incoming requests.
Expectations
This API assures the users of timely, reliable and efficient delivery of messages across an extended coverage.
Examples of Free Short Message Services APIs
There are several APIs for SMSs that are offered as freemiums, while others are free. The free APIs in this category include Nemo Verify, sms77io and Twilio.
Best SMS APIs
Twilio SMS
Nexmo SMS Messaging
Telesign SMS Verify
Nexmo Verify
Nexmo Number Insight
Inteltech SMS
SMS Gateway
ClickSend SMS
SMS API SDKs
All SMS APIs are supported and made available in multiple developer programming languages and SDKs including:
Node.js
PHP
Python
Ruby
Objective-C
Java (Android)
C# (.NET)
cURL
Just select your preference from any API endpoints page.
Sign up today for free on https://speedsms.in/ to begin using SMS APIs!
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