Message Resource

A Message resource represents an inbound or outbound message. Twilio creates a Message when any of the following occur:

You create a Message resource (i.e., send an outbound message) via the REST API
Twilio executes a <Message> TwiML instruction
Someone sends a message to one of your Twilio numbers or messaging channel addresses

With the Message resource, you can:

Create new messages (i.e., send outbound messages)
Fetch a specific message
Read a list of messages
Update or redact the content of an existing message
Delete messages from your account

If you're using Messaging Services, you can also use the Message resource to:

A Message resource can also have a Media sub-resource and/or a MessageFeedback sub-resource.

For step-by-step instructions for sending your first SMS with Twilio, check out one of the SMS quickstarts.

Looking to send WhatsApp messages with Twilio? Try one of the WhatsApp quickstarts.

If you're looking for how to respond to incoming messages, check out the How to Receive and Reply to SMS Messages tutorial.

Message properties

Resource Properties in REST API format
`body`	string PII MTL: 30 DAYS The text content of the message
`num_segments`	string Not PII The number of segments that make up the complete message. SMS message bodies that exceed the character limit are segmented and charged as multiple messages. Note: For messages sent via a Messaging Service, `num_segments` is initially `0`, since a sender hasn't yet been assigned.
`direction`	enum:direction Not PII The direction of the message. Can be: `inbound` for incoming messages, `outbound-api` for messages created by the REST API, `outbound-call` for messages created during a call, or `outbound-reply` for messages created in response to an incoming message.
`from`	phone_number PII MTL: 120 DAYS The sender's phone number (in E.164 format), alphanumeric sender ID, Wireless SIM, short code, or channel address (e.g., `whatsapp:+15554449999`). For incoming messages, this is the number or channel address of the sender. For outgoing messages, this value is a Twilio phone number, alphanumeric sender ID, short code, or channel address from which the message is sent.
`to`	string PII MTL: 120 DAYS The recipient's phone number (in E.164 format) or channel address (e.g. `whatsapp:+15552229999`)
`date_updated`	date_time<rfc2822> Not PII The RFC 2822 timestamp (in GMT) of when the Message resource was last updated
`price`	string Not PII The amount billed for the message in the currency specified by `price_unit`. The `price` is populated after the message has been sent/received, and may not be immediately availalble. View the Pricing page for more details.
`error_message`	string Not PII The description of the `error_code` if the Message `status` is `failed` or `undelivered`. If no error was encountered, the value is `null`.
`uri`	string Not PII The URI of the Message resource, relative to `https://api.twilio.com`.
`account_sid`	sid<AC> Not PII The SID of the Account associated with the Message resource
`num_media`	string Not PII The number of media files associated with the Message resource.
`status`	enum:status Not PII The status of the Message. Possible values: `accepted`, `scheduled`, `canceled`, `queued`, `sending`, `sent`, `failed`, `delivered`, `undelivered`, `receiving`, `received`, or `read` (WhatsApp only). For more information, See detailed descriptions.
`messaging_service_sid`	sid<MG> Not PII The SID of the Messaging Service associated with the Message resource. The value is `null` if a Messaging Service was not used.
`sid`	sid<MM> Not PII The unique, Twilio-provided string that identifies the Message resource.
`date_sent`	date_time<rfc2822> Not PII The RFC 2822 timestamp (in GMT) of when the Message was sent. For an outgoing message, this is when Twilio sent the message. For an incoming message, this is when Twilio sent the HTTP request to your incoming message webhook URL.
`date_created`	date_time<rfc2822> Not PII The RFC 2822 timestamp (in GMT) of when the Message resource was created
`error_code`	integer? Not PII The error code returned if the Message `status` is `failed` or `undelivered`. If no error was encountered, the value is `null`.
`price_unit`	currency Not PII The currency in which `price` is measured, in ISO 4127 format (e.g. `usd`, `eur`, `jpy`).
`api_version`	string Not PII The API version used to process the Message
`subresource_uris`	uri_map Not PII A list of related resources identified by their URIs relative to `https://api.twilio.com`

The table below lists possible values of a Message resource's Status. As messages can be either outbound or inbound, each status description explicitly indicates to which message direction the status applies.

ENUM:STATUS possible values in REST API format
`queued`	The API request to send an outbound message was successful and the message is queued to be sent out by a specific `From` sender. For messages sent without a Messaging Service this is the initial `Status` value of the Message resource.
`sending`	Twilio is in the process of dispatching the outbound message to the nearest upstream carrier in the network.
`sent`	The nearest upstream carrier accepted the outbound message.
`failed`	The outbound message failed to send. This can happen for various reasons including queue overflows, Account suspensions and media errors. Twilio does not charge you for failed messages.
`delivered`	Twilio has received confirmation of outbound message delivery from the upstream carrier, and, where available, the destination handset.
`undelivered`	Twilio received a delivery receipt indicating that the outbound message was not delivered. This can happen for many reasons including carrier content filtering and the availability of the destination handset.
`receiving`	The inbound message was received by Twilio and is currently being processed.
`received`	The inbound message was received and processing is complete.
`accepted`	[Messaging Service only] Twilio has received your API request to immediatedly send an outbound message with a Messaging Service. If you did not provide a specific `From` sender in the service's Sender Pool to use, the service is dynamically selecting a `From` sender. For unscheduled messages to be sent with a Messaging Service, this is the initial `Status` value of the Message resource.
`scheduled`	[Messaging Service only] The Message resource is scheduled to be sent with a Messaging Service. If you schedule a message with a Messaging Service, this is the initial `Status` value of the Message resource.
`read`	WhatsApp only: The recipient opened the outbound message. Recipient must have read receipts enabled.
`partially_delivered`	[Deprecated]
`canceled`	[Messaging Service only] The message scheduled with a Messaging Service has been canceled.

NumSegments property

The NumSegments property is relevant for SMS messages only.

For outbound SMS messages, this property indicates the number of SMS messages it took to deliver the body of the message.

If the body of a message is more than 160 GSM-7 characters (or 70 UCS-2 characters), Twilio segments and annotates your messages to attempt proper reassembly on the recipient's handset (not supported by all carriers and handsets). This ensures your body text transmits with the highest fidelity.

On inbound SMS messages, this property indicates the number of SMS messages that make up the message received.

If the body of a message is more than 160 GSM-7 characters (or 70 UCS-2 characters), Twilio attempts to reassemble the message received by your Twilio phone number. All carriers and handsets do not necessarily support this.

Your account is charged for each segment sent or received.

Learn more on the SMS Character Limit Glossary page.

Create a Message resource

post

https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json

To send a new outgoing message, send an HTTP POST request to your Account's Messages list resource URI.

If you want to send messages while in trial mode, you must first verify your 'To' phone number with Twilio. You can verify your phone number by adding it to your Verified Caller IDs in the Console.

Twilio queues messages for delivery at your prescribed rate limit. API requests for messages that exceed the specified rates will be queued and executed as capacity is available.

If you need to enqueue a large number of messages, you may want to use Messaging Services.

Every request to create a new Message resource requires a recipient, a sender, and content.

A recipient is specified via the To parameter.

The sender is specified via one of the following parameters:

From
MessagingServiceSid

The message content is specified via one of the following parameters:

MediaUrl
Body
ContentSid

The table below describes these parameters in more detail.

Parameters

Parameters in REST API format
`account_sid` Path	post sid<AC> Not PII The SID of the Account creating the Message resource.
`to` Required	post string<helpers_type=phone_number> PII MTL: 120 DAYS The recipient's phone number in E.164 format (for SMS/MMS) or channel address, e.g. `whatsapp:+15552229999`.
`status_callback` Optional	post string<helpers_type=url> Not PII The URL of the endpoint to which Twilio sends Message status callback requests. URL must contain a valid hostname and underscores are not allowed. If you include this parameter with the `messaging_service_sid`, Twilio uses this URL instead of the Status Callback URL of the Messaging Service.
`application_sid` Optional	post sid<AP> Not PII The SID of the associated TwiML Application. If this parameter is provided, the `status_callback` parameter of this request is ignored; Message status callback requests are sent to the TwiML App's `message_status_callback` URL.
`max_price` Optional	post currency<helpers_type=decimal> Not PII The maximum price in US dollars that you are willing to pay for this Message's delivery. The value can have up to four decimal places. When the `max_price` parameter is provided, the cost of a message is checked before it is sent. If the cost exceeds `max_price`, the message is not sent and the Message `status` is `failed`.
`provide_feedback` Optional	post boolean Not PII Boolean indicating whether or not you intend to provide delivery confirmation feedback to Twilio (used in conjunction with the Message Feedback subresource). Default value is `false`.
`attempt` Optional	post integer Not PII Total number of attempts made (including this request) to send the message regardless of the provider used
`validity_period` Optional	post integer Not PII The maximum length in seconds that the Message can remain in Twilio's outgoing message queue. If a queued Message exceeds the `validity_period`, the Message is not sent. Accepted values are integers from `1` to `14400`. Default value is `14400`. A `validity_period` greater than `5` is recommended. Learn more about the validity period
`force_delivery` Optional	post boolean Not PII Reserved
`content_retention` Optional	post ienum:content_retention Not PII Determines if the message content can be stored or redacted based on privacy settings
`address_retention` Optional	post ienum:address_retention Not PII Determines if the address can be stored or obfuscated based on privacy settings
`smart_encoded` Optional	post boolean Not PII Whether to detect Unicode characters that have a similar GSM-7 character and replace them. Can be: `true` or `false`.
`persistent_action` Optional	post string[] Not PII Rich actions for non-SMS/MMS channels. Used for sending location in WhatsApp messages.
`shorten_urls` Optional	post boolean Not PII For Messaging Services with Link Shortening configured only: A Boolean indicating whether or not Twilio should shorten links in the `body` of the Message. Default value is `false`. If `true`, the `messaging_service_sid` parameter must also be provided.
`schedule_type` Optional	post ienum:schedule_type Not PII For Messaging Services only: Include this parameter with a value of `fixed` in conjuction with the `send_time` parameter in order to schedule a Message.
`send_at` Optional	post date_time<iso8601> Not PII The time that Twilio will send the message. Must be in ISO 8601 format.
`send_as_mms` Optional	post boolean Not PII If set to `true`, Twilio delivers the message as a single MMS message, regardless of the presence of media.
`content_variables` Optional	post string Not PII For Content Editor/API only: Key-value pairs of Template variables and their substitution values. `content_sid` parameter must also be provided. If values are not defined in the `content_variables` parameter, the Template's default placeholder values are used.
`risk_check` Optional	post ienum:risk_check Not PII For SMS pumping protection feature only: Include this parameter with a value of `disable` to skip any kind of risk check on the respective message request.
`from` Required if messaging_service_sid is not passed	post string<helpers_type=phone_number> PII MTL: 120 DAYS The sender's Twilio phone number (in E.164 format), alphanumeric sender ID, Wireless SIM, short code, or channel address (e.g., `whatsapp:+15554449999`). The value of the `from` parameter must be a sender that is hosted within Twilio and belongs to the Account creating the Message. If you are using `messaging_service_sid`, this parameter can be empty (Twilio assigns a `from` value from the Messaging Service's Sender Pool) or you can provide a specific sender from your Sender Pool.
`messaging_service_sid` Required if from is not passed	post sid<MG> Not PII The SID of the Messaging Service you want to associate with the Message. When this parameter is provided and the `from` parameter is omitted, Twilio selects the optimal sender from the Messaging Service's Sender Pool. You may also provide a `from` parameter if you want to use a specific Sender from the Sender Pool.
`body` Required if media_url, content_sid is not passed	post string PII MTL: 30 DAYS The text content of the outgoing message. Can be up to 1,600 characters in length. SMS only: If the `body` contains more than 160 GSM-7 characters (or 70 UCS-2 characters), the message is segmented and charged accordingly. For long `body` text, consider using the send_as_mms parameter.
`media_url` Required if body, content_sid is not passed	post url[] PII MTL: 30 DAYS The URL of media to include in the Message content. `jpeg`, `jpg`, `gif`, and `png` file types are fully supported by Twilio and content is formatted for delivery on destination devices. The media size limit is 5 MB for supported file types (`jpeg`, `jpg`, `png`, `gif`) and 500 KB for other types of accepted media. To send more than one image in the message, provide multiple `media_url` parameters in the POST request. You can include up to ten `media_url` parameters per message. International and carrier limits apply.
`content_sid` Required if body, media_url is not passed	post sid<HX> Not PII For Content Editor/API only: The SID of the Content Template to be used with the Message, e.g., `HXXXXXXXXXXXXXXXXXXXXXXXXXXXXX`. If this parameter is not provided, a Content Template is not used. Find the SID in the Console on the Content Editor page. For Content API users, the SID is found in Twilio's response when creating the Template or by fetching your Templates.

Twilio's request to the StatusCallback URL

Whenever a Message resource's Status changes, Twilio sends a POST request to the Message resource's StatusCallback URL.

In a status callback request, Twilio provides a subset of the standard request properties, and additionally MessageStatus and ErrorCode. These properties are described in the table below.

Property	Description
`MessageStatus`	The status of the Message resource at the time the status callback request was sent.
`ErrorCode`	If an error occurred (i.e. the `MessageStatus` is `failed` or `undelivered`), this property provides additional information about the failure.

The properties included in Twilio's request to the StatusCallback URL vary by messaging channel and event type and are subject to change.

Twilio occasionally adds new properties without advance notice.

When integrating with status callback requests, it is important that your implementation is able to accept and correctly run signature validation on an evolving set of parameters.

Twilio strongly recommends using the signature validation methods provided in the Helper Libraries and not implementing your own signature validation.

SMS/MMS

For most SMS/MMS Messages that have a Status of delivered or undelivered, Twilio's request to the StatusCallback URL contains an additional property:

Property Description

Property	Description
`RawDlrDoneDate`	This property is a passthrough of the Done Date included in the DLR (Delivery Receipt) that Twilio received from the carrier. The value is in `YYMMDDhhmm` format. `YY` is last two digits of the year (00-99) `MM` is the two-digit month (01-12) `DD` is the two-digit day (01-31) `hh` is the two-digit hour (00-23) `mm` is the two-digit minute (00-59). Learn more on the "Addition of RawDlrDoneDate to Delivered and Undelivered Status Webhooks" Changelog page.

RawDlrDoneDate

This property is a passthrough of the Done Date included in the DLR (Delivery Receipt) that Twilio received from the carrier.

The value is in YYMMDDhhmm format.

YY is last two digits of the year (00-99)
MM is the two-digit month (01-12)
DD is the two-digit day (01-31)
hh is the two-digit hour (00-23)
mm is the two-digit minute (00-59).

Learn more on the "Addition of RawDlrDoneDate to Delivered and Undelivered Status Webhooks" Changelog page.

WhatsApp and other messaging channels

If the Message resource uses WhatsApp or another messaging channel, Twilio's request to the StatusCallback URL contains additional properties. These properties are listed in the table below.

Property	Description
`ChannelInstallSid`	The Installed Channel SID that was used to send this message
`ChannelStatusMessage`	The error message returned by the underlying messaging channel if Message delivery failed. This property is present only if the Message delivery failed.
`ChannelPrefix`	The channel-specific prefix identifying the messaging channel associated with this Message
`EventType`	This property contains information about post-delivery events. If the channel supports read receipts (currently WhatsApp only), this property's value is `READ` after the recipient has read the message.

Send an SMS message

The example below shows how to create a Message resource with an SMS recipient.

Sending this POST request causes Twilio to send a text message from +15557122661 (a Twilio phone number belonging to the Account sending the request) to +15558675310. The content of the text message is Hi there.

Example 1

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Example JSON response

Send an SMS message

Send a WhatsApp message

If you have a Twilio-approved WhatsApp sender, you can send WhatsApp messages by creating a new Message resource. (WhatsApp session limitations apply.)

The From parameter value must be your approved WhatsApp sender address (e.g., whatsapp:+15552221111).

The To parameter value must be a WhatsApp recipient address (e.g., whatsapp:+15553334444).

You must also provide message content via the Body and/or MediaUrl parameters.

If you're using Messaging Services with Content API/Content Editor, you can provide message content via the contentSid and contentVariables parameters.

Note: WhatsApp does not support including a text body in the same message as a video, audio file, document, contact (vCard), or location. If you pass the Body parameter on a message with one of these media types, the body is ignored and not delivered to the recipient.

Example 2

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Example JSON response

Send a WhatsApp Message

Send a message with a Messaging Service

When sending a message with a Messaging Service, you must provide a recipient via the To parameter and content via the Body, ContentSid, or MediaUrl parameters. In addition, you must provide the MessagingServiceSid.

If you provide a MessagingServiceSid and no From parameter, Twilio determines the optimal From value from your Sender Pool. In this case, the Message resource's initial Status value is accepted.

Optionally, you can provide a MessagingServiceSid and a From parameter. The From parameter must be a sender from your Messaging Service's Sender Pool. In this case, the Message resource's initial Status value is queued.

With Messaging Services, you can also schedule messages to be sent in the future and send messages with shortened links.

Example 3

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Example JSON response

Send a message with a Messaging Service

Fetch a Message resource

get

https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages/{Sid}.json

Returns a single Message resource specified by the provided Message SID.

Parameters

Parameters in REST API format
`account_sid` Path	get sid<AC> Not PII The SID of the Account associated with the Message resource
`sid` Path	get sid<MM> Not PII The SID of the Message resource to be fetched

Parameters in REST API format

account_sid

Path

get sid<AC> Not PII

The SID of the Account associated with the Message resource

sid

Path

get sid<MM> Not PII

The SID of the Message resource to be fetched

Example 1

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Example JSON response

Fetch Message

Read multiple Message resources

get

https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages.json

Read multiple Message resources by sending a GET request to your Account's Messages list URI.

Results are sorted by the DateSent field, with the most recent messages appearing first.

If you are using the Twilio REST API and plan on requesting more records than will fit on a single page, you may want to use the response's nextpageuri property. Requesting this URI ensures that your next request picks up where it left off and can prevent you from retrieving duplicate data if you are actively sending or receiving messages.

This is not necessary if you are using one of the Helper Libraries, which automatically handle pagination. Take a look at the Helper Library documentation for more information.

You can also filter the Messages list by providing the following query string parameters to the listing resource:

Parameters

Parameters in REST API format
`account_sid` Path	get sid<AC> Not PII The SID of the Account associated with the Message resources.
`to` Optional	get phone_number PII MTL: 120 DAYS Filter by recipient. For example: Set this `to` parameter to `+15558881111` to retrieve a list of Message resources with `to` properties of `+15558881111`
`from` Optional	get phone_number PII MTL: 120 DAYS Filter by sender. For example: Set this `from` parameter to `+15552229999` to retrieve a list of Message resources with `from` properties of `+15552229999`
`date_sent` Optional	get date_time_inequality<iso8601> Not PII Filter by Message `sent_date`. Accepts GMT dates in the following formats: `YYYY-MM-DD` (to find Messages with a specific `sent_date`), `<=YYYY-MM-DD` (to find Messages with `sent_date`s on and before a specific date), and `>=YYYY-MM-DD` (to find Messages with `sent_dates` on and after a specific date).

Example 1

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Example JSON response

Returns a list of all Message resources associated with your Account

List all Message resources

Returns a list of all Message resources associated with your Account

Example 2

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Example JSON response

List all messages sent on August 31, 2016 from +15017122661 and to +15558675310

List Message resources matching filter criteria

List all messages sent on August 31, 2016 from +15017122661 and to +15558675310

Example 3

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Example JSON response

List all Messages sent before March 1st, 2019

List Messages that were sent before a specific date

List all Messages sent before March 1st, 2019

Example 4

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Example JSON response

List all Messages sent between January 15th, 2021, 01:23:45 UTC and January 17th, 2021, 01:23:45 UTC

List Messages within a specific time period

List all Messages sent between January 15th, 2021, 01:23:45 UTC and January 17th, 2021, 01:23:45 UTC

Update a Message resource

post

https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages/{Sid}.json

Updates the body of a Message resource. Send a POST request to a Message resource's URI containing the updated parameters.

This action is primarily used to redact Message content. To redact a Message resources's Body, send a POST request to the Message resource's URI and set the Body parameter as an empty string: "". This redacts the Body of a message while keeping the other Message resource properties intact.

Parameters

Parameters in REST API format
`account_sid` Path	post sid<AC> Not PII The SID of the Account that created the Message resources to update.
`sid` Path	post sid<MM> Not PII The SID of the Message resource to be updated
`body` Optional	post string PII MTL: 30 DAYS The new `body` of the Message resource. To redact the text content of a Message, this parameter's value must be an empty string
`status` Optional	post ienum:update_status Not PII Set as `canceled` to prevent a not-yet-sent Message from being sent. Can be used to cancel sending a scheduled Message (Messaging Services only).

Example 1

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Example JSON response

Redact the body of a Message resource

Delete a Message resource

delete

https://api.twilio.com/2010-04-01/Accounts/{AccountSid}/Messages/{Sid}.json

To delete a Message resource, send a DELETE request to the Message resource's URI.

If the DELETE request is successful, Twilio's response status code is HTTP 204 (No Content).

A deleted Message resource no longer appears in your Account's Messaging logs. Deleted messages cannot be recovered.

Deleting a Message resource also deletes any associated Media and/or MessageFeedback sub-resources. Any associated media file is also deleted unless the same media file is associated with another Message resource in your Account. For example, if you send 1,000 messages with the same media file (e.g., a .jpeg file), that media file remains accessible until all 1,000 associated Message resources (and/or the associated Media sub-resources) are deleted.

Message bodies may persist for up to 30 days after an HTTP DELETE request in our database backups.

Parameters

Parameters in REST API format
`account_sid` Path	delete sid<AC> Not PII The SID of the Account associated with the Message resource
`sid` Path	delete sid<MM> Not PII The SID of the Message resource you wish to delete

Parameters in REST API format

account_sid

Path

delete sid<AC> Not PII

The SID of the Account associated with the Message resource

sid

Path

delete sid<MM> Not PII

The SID of the Message resource you wish to delete

Example 1

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Example JSON response

Delete Message

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Parameters

Example 1

Send an SMS message

Example 2

Send a WhatsApp Message

Example 3

Send a message with a Messaging Service

Parameters

Example 1

Fetch Message

Parameters

Example 1

List all Message resources

Example 2

List Message resources matching filter criteria

Example 3

List Messages that were sent before a specific date

Example 4

List Messages within a specific time period

Parameters

Example 1

Redact the body of a Message resource

Parameters

Example 1

Delete Message

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