Free HttpSms Turn an Android Phone into an SMS Gateway Extension

[Ibrahim_Jamar]

🧩 HTTPSms

An extension for MIT App Inventor 2.
HTTP SMS Extension for sending SMS via httpsms.com API and retrieving delivery status through a real mobile device.

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Introduction

HTTPSms enables your MIT App Inventor / Kodular apps to send and track SMS messages using a real SIM card through the HTTPSms mobile application.

Unlike traditional SMS gateways, messages are sent directly from a physical Android phone using the user’s [developer ] mobile carrier.

This extension does NOT send SMS from servers. It relies on a real device.

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Prerequisites (Required)

Before using this extension, ensure the following,

1. Install the HTTPSms Android App on a physical Android phone
   Download: https://httpsms.com

2. The phone must be online (mobile data or Wi‑Fi)

3. A working SIM card must be inserted (SMS will be sent via the carrier)

4. Generate an API Key from your HTTPSms dashboard

5. Battery optimization must be disabled for the HTTPSms app

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Getting Your API Key

1. Open https://httpsms.com
2. Sign in / create an account
3. Go to Dashboard → API Keys
4. Copy your API Key

Click here to get your API Key: https://httpsms.com/dashboard

Set this key in the ApiKey designer or setter property.

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When to Use HTTPSms

Use this extension when,

• You need real SMS delivery (OTP, alerts, confirmations)
• You want messages sent from your own phone number
• You want to avoid expensive SMS gateway fees
• You need delivery status (delivered_at support)

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Limitations

• Requires a physical Android device
• Phone must stay online and powered on
• SMS speed depends on mobile carrier
• Not suitable for bulk/marketing SMS
• Dual‑SIM devices may require manual SIM selection

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Warnings & Important Notes

• Do NOT uninstall or force‑stop the HTTPSms app
• Do NOT clear app data after linking API key
• Excessive SMS sending may trigger carrier limits
• Delivery status depends on carrier support
• This extension cannot bypass SMS regulations

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Specifications

• Package: com.httpsms.httpsms
• Size: 19.99 KB
• Minimum API Level: 14
• Updated On: 2026‑01‑28
  Built & documented using: FAST v5.4.0

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Events (7)

1. OnSmsSent

Triggered when SMS is successfully sent

Parameters:

• messageId (text)
• status (text)
• response (text)

2. OnSmsFailed

Triggered when SMS sending fails

Parameters:

• errorMessage (text)
• errorCode (number)

3. OnDeliveryStatusReceived

Triggered when delivery status is retrieved

Parameters:

• messageId (text)
• deliveredAt (text)
• status (text)
• fullResponse (text)

4. OnStatusCheckFailed

Triggered when delivery status request fails

Parameters:

• errorMessage (text)

5. OnAllMessagesReceived

Triggered when all messages are retrieved

Parameters:

• messagesJson (text)
• count (number)

6. OnRawResponse

Triggered when raw API response is received

Parameters:

• response (text)

7. OnDeliveredAtExtracted

Triggered when delivery time is extracted

Parameters:

• deliveredAt (text)

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Methods (10)

SendSms(fromNumber, toNumber, message)

Send SMS via HTTPSms API

GetDeliveryStatus(ownerNumber, contactNumber)

Retrieve delivery status between two numbers

GetAllDeliveredAtTimes(ownerNumber, contactNumber)

Get all delivery timestamps

GetMessageByIndex(ownerNumber, contactNumber, index)

Retrieve a specific message

ExtractField(jsonString, fieldName) → text

Extract any JSON field

ExtractDeliveredAtFromJson(jsonString)

Quick delivery time extraction

CountDeliveredMessages(jsonString) → number

Count delivered messages

GetFirstDeliveredAt(jsonResponse) → text

Retrieve first delivery time

IsMessageDelivered(jsonResponse) → boolean

Check delivery status

ExtractMessageContent(jsonResponse) → text

Extract message body

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Designer Properties

ApiKey (string)

Your HTTPSms API key

DebugMode (boolean)

Enable debug logging (default: false)

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Setters

• ApiKey(text)
• DebugMode(boolean)
  

Getters

• ApiKey → text
  

• DebugMode → boolean
  

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Aix

com.httpsms.httpsms.aix (20.0 KB)

Best Practices

• Use short messages for faster delivery
• Handle OnSmsFailed properly
• Enable DebugMode during testing only
• Always validate phone numbers

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Developer Notes

This extension is ideal for OTP systems, admin alerts, and personal automation apps.

It is NOT intended for spam, marketing, or mass messaging.

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Happy oding