A Dart package for all platforms which helps developers with Twilio API services. This Dart Package can be integrated into any Flutter application to make use of Twilio API.

• Send SMS programmatically
• Get all SMS related to a Twilio account
• Get more info on each SMS sent from a Twilio account
• Send WhatsApp messages programmatically
• Send Scheduled SMS
• Cancel Scheduled SMS
• Send Scheduled WhatsApp message
• Cancel Scheduled WhatsApp Message
• Twilio verification supporting multiple channels
• Send Messenger Texts

Check out our comprehensive Example provided with this plugin.

To use this package :

• add the dependency to your pubspec.yaml file.

dependencies:
  flutter:
    sdk: flutter
  twilio_flutter:

Please find the following values from Twilio Console:

• Account SID
• Twilio Number
• Auth Token
• Messaging Service SID (Optional, required for features like scheduled messages)
• Veridication service SID (Optional, required for Twilio verify feature)

Create a new TwilioFlutter object and initialize with required values

final TwilioFlutter twilioFlutter = TwilioFlutter(
    accountSid: '', // replace with Account SID
    authToken: '', // replace with Auth Token
    twilioNumber: '' // replace with Twilio Number(With country code)
);

The following are the SMS related features in TwilioFlutter.

twilioFlutter.sendSMS() can be used to send SMS with required message body to any mobile number by providing the number and proper country code.

• Use sendSMS with the recipient number and message body using the default twilioNumber.

TwilioResponse response = await twilioFlutter.sendSMS(
toNumber : '',
messageBody : 'hello world');

• Use sendSMS with the recipient number and message body using custom twilioNumber.

TwilioResponse response = await twilioFlutter.sendSMS(
toNumber : '',
messageBody : 'hello world',
fromNumber:''
);

The following are the WhatsApp related features in TwilioFlutter.

twilioFlutter.sendWhatsApp() can be used to send WhatsApp message with required message body to any mobile number by providing the number and proper country code.

TwilioResponse response = await twilioFlutter.sendWhatsApp(toNumber : '',// replace with Mobile Number(With country code)
messageBody : 'hello world');

The following are the Twilio verify related features in TwilioFlutter.

Verification service has to be created in order to access all the features. This can be done either through the Twilio console or by using the following by providing a service name:

TwilioResponse response = await twilioFlutter.createVerificationService(serviceName:'service name');

This method returns TwilioResponse and metadata from TwilioResponse will have the verification service ID in the key: "sid". This sid should be used for the verification.

This method is used to send the verification code to the desired channel.

TwilioResponse response = await twilioFlutter.sendVerificationCode(verificationServiceId:'sid',
recipient: '',
verificationChannel: VerificationChannel.SMS
);

Currently supported channels are:

• SMS
• WHATSAPP
• CALL

Recipient: can be mobile number, email etc depending on channel.

To verify a code use the verify_code() method by passing the code input.

TwilioResponse response = await twilioFlutter.verifyCode(verificationServiceId:'sid',
recipient: '',
code: ''
);

This method returns TwilioResponse and metadata from TwilioResponse has a status key, if it is "approved" then the verification is successful.

The following are the common services provided by TwilioFlutter.

The twilioFlutter.getSmsList() can be used to view all the SMS messages that was sent using the twilio account, an optional pageSize parameter can be passed which defaults to 20.

final TwilioResponse response = await twilioFlutter.getSmsList({String pageSize}); //pageSize defaults to 20

The twilioFlutter.getSMS() can be used to view the details of a single SMS message resource using the SID of the message. The SID can be found using the twilioFlutter.getSmsList().

final TwilioResponse response = await twilioFlutter.getSMS(String messageSID); //Use message sid from the individual messages.

The twilioFlutter.changeDefaultTwilioNumber() can be used to update the default Twilio number that was used to initialize the TwilioFlutter object.

twilioFlutter.changeDefaultTwilioNumber(''); // To change the twilio number(With country code)

Create a new TwilioMessagingService object and initialize with required values

final TwilioMessagingService twilioMessagingService = TwilioMessagingService(
    accountSid: '', // replace with Account SID
    authToken: '', // replace with Auth Token
    messagingServiceSid: '' // replace with messaging service sid from twilio console
);

The following are the SMS related features in TwilioMessagingService.

twilioMessagingService.sendSMS() can be used to send SMS with required message body to any mobile number by providing the number and proper country code. There is two ways to use the function:

• Use sendSMS with the recipient number and message body using the default twilioNumber.

TwilioResponse response = await twilioMessagingService.sendSMS(
toNumber : '',// replace with Mobile Number(With country code)
messageBody : 'hello world');

• Use sendSMS with the recipient number and message body using custom fromNumber.

TwilioResponse response = await twilioMessagingService.sendSMS(
toNumber : '',// replace with Mobile Number(With country code)
messageBody : 'hello world',
fromNumber:''// replace with Mobile Number(With country code)
);

Scheduled messages can be sent using twilioMessagingService.sendScheduledSms() if the sendAt is at least 15 after the current time.

TwilioResponse response = await twilioMessagingService.sendScheduledSms(
toNumber : '',
messageBody : 'hello world',
sendAt:'2024-02-18T16:18:55Z'
// Datetime has to be in the same format
);

Scheduled SMS can be cancelled using the messageSid with twilioMessagingService.cancelScheduledSms().

TwilioResponse response = await twilioMessagingService.cancelScheduledSms(messageSID:''// replace with message SID);

The following are the WhatsApp related features in TwilioMessagingService.

twilioMessagingService.sendWhatsAppMessage() can be used to send WhatsApp message with required message body to any mobile number by providing the number and proper country code.

TwilioResponse response = await twilioMessagingService.sendWhatsAppMessage(toNumber : '',// replace with Mobile Number(With country code)
messageBody : 'hello world');

Scheduled messages can be sent using twilioMessagingService.sendScheduledWhatsAppMessage() if the sendAt is at least 15 after the current time.

TwilioResponse response = await twilioMessagingService.sendScheduledWhatsAppMessage(
toNumber : '',
messageBody : 'hello world',
sendAt:'2024-02-18T16:18:55Z'
// Datetime has to be in the same format
);

Scheduled whatsapp messages can be cancelled using the messageSid with twilioMessagingService.cancelScheduledWhatsAppMessage().

TwilioResponse response = await twilioMessagingService.cancelScheduledWhatsAppMessage(messageSID:''// replace with message SID
);

Create a new TwilioMessenger object and initialize with required values

final TwilioMessenger twilioMessenger = TwilioMessenger(
    accountSid: '', // replace with Account SID
    authToken: '', // replace with Auth Token
    messengerId: '' // replace with FB page ID
);

Send Messenger text message using the send_messenger() method.

TwilioResponse response = await twilioMessenger.sendMessenger(recipient:'',
messageBody: ''
);

All the function calls from all the services will return a TwilioResponse Object.

TwilioResponse wraps the response of all the APIs. The fields in TwilioResponse:

• responseCode: give the response code of the requests. Possible values: 200,400 etc.
• responseState: shows if the request fails or completes properly. Possible values: ResponseState.SUCCESS or ResponseState.FAILED
• errorData : Holds the ErrorData object in case of any failures/exceptions.
• metadata : Holds all the info from the response of the API as json.

ErrorData object has the details about the errors. The fields are:

• code
• status
• message
• more_info

• Cancel Scheduled Messages
• Send message through Facebook Messenger
• Twilio verification
• Email Sending Support
• Update a Message resource
• Delete a Message resource
• Alphanumeric Sender IDs in Messaging Services
• More Support for Messaging Service

• Android
• iOS
• Web
• MacOs
• Windows
• Linux

• https://www.dhiwise.com/post/twilio-flutter-sdk-for-beginners-enhance-flutter-development
• https://levelup.gitconnected.com/twilio-text-messages-with-flutter-fe63f41eebe9https://community.flutterflow.io/c/community-custom-widgets/post/send-an-sms-with-twilio-4ihPgc6fW0FwWtC

Please file any issues, bugs or feature requests as an issue on our GitHub page.

If you would like to contribute to the plugin (e.g. by improving the documentation, solving a bug or adding a cool new feature), please carefully review our contribution guide and send us your pull request.

This Twilio Flutter plugin for Flutter is developed by Adarsh Balachandran.