user: sendMail

Namespace: microsoft.graph

Send the message specified in the request body using either JSON or MIME format.

When using JSON format you can include a file attachment in the same sendMail action call.

When using MIME format:

• Provide the applicable Internet message headers and the MIME content, all encoded in base64 format in the request body.
• Add any attachments and S/MIME properties to the MIME content.

This method saves the message in the Sent Items folder.

Alternatively, create a draft message to send later.

To learn more about the steps involved in the backend before a mail is delivered to recipients, see here.

Permissions

One of the following permissions are required to call this API. To learn more, including how to choose permissions, see Permissions.

Permission type	Permissions (from least to most privileged)
Delegated (work or school account)	Mail.Send
Delegated (personal Microsoft account)	Mail.Send
Application	Mail.Send

HTTP request

POST /me/sendMail
POST /users/{id | userPrincipalName}/sendMail

Request headers

Name	Type	Description
Authorization	string	Bearer {token}. Required.
Content-Type	string	Nature of the data in the body of an entity. Required. Use application/json for a JSON object and text/plain for MIME content.

Request body

When using JSON format, provide a JSON object with the following parameters.

Parameter	Type	Description
message	Message	The message to send. Required.
saveToSentItems	Boolean	Indicates whether to save the message in Sent Items. Specify it only if the parameter is false; default is true. Optional.

When specifying the body in MIME format, provide the MIME content as a base64-encoded string in the request body.

Response

If successful, this method returns 202 Accepted response code. It does not return anything in the response body.

If the request body includes malformed MIME content, this method returns 400 Bad request and the following error message: "Invalid base64 string for MIME content".

Examples

Example 1: Send a new email using JSON format

Here is an example of how to call this API.

Request

Here is an example of the request.

HTTP

POST https://graph.microsoft.com/v1.0/me/sendMail
Content-type: application/json

{
  "message": {
    "subject": "Meet for lunch?",
    "body": {
      "contentType": "Text",
      "content": "The new cafeteria is open."
    },
    "toRecipients": [
      {
        "emailAddress": {
          "address": "frannis@contoso.onmicrosoft.com"
        }
      }
    ],
    "ccRecipients": [
      {
        "emailAddress": {
          "address": "danas@contoso.onmicrosoft.com"
        }
      }
    ]
  },
  "saveToSentItems": "false"
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Microsoft.Graph.Me.SendMail.SendMailPostRequestBody
{
	Message = new Message
	{
		Subject = "Meet for lunch?",
		Body = new ItemBody
		{
			ContentType = BodyType.Text,
			Content = "The new cafeteria is open.",
		},
		ToRecipients = new List<Recipient>
		{
			new Recipient
			{
				EmailAddress = new EmailAddress
				{
					Address = "frannis@contoso.onmicrosoft.com",
				},
			},
		},
		CcRecipients = new List<Recipient>
		{
			new Recipient
			{
				EmailAddress = new EmailAddress
				{
					Address = "danas@contoso.onmicrosoft.com",
				},
			},
		},
	},
	SaveToSentItems = false,
};
await graphClient.Me.SendMail.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const sendMail = {
  message: {
    subject: 'Meet for lunch?',
    body: {
      contentType: 'Text',
      content: 'The new cafeteria is open.'
    },
    toRecipients: [
      {
        emailAddress: {
          address: 'frannis@contoso.onmicrosoft.com'
        }
      }
    ],
    ccRecipients: [
      {
        emailAddress: {
          address: 'danas@contoso.onmicrosoft.com'
        }
      }
    ]
  },
  saveToSentItems: 'false'
};

await client.api('/me/sendMail')
	.post(sendMail);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

Message message = new Message();
message.subject = "Meet for lunch?";
ItemBody body = new ItemBody();
body.contentType = BodyType.TEXT;
body.content = "The new cafeteria is open.";
message.body = body;
LinkedList<Recipient> toRecipientsList = new LinkedList<Recipient>();
Recipient toRecipients = new Recipient();
EmailAddress emailAddress = new EmailAddress();
emailAddress.address = "frannis@contoso.onmicrosoft.com";
toRecipients.emailAddress = emailAddress;
toRecipientsList.add(toRecipients);
message.toRecipients = toRecipientsList;
LinkedList<Recipient> ccRecipientsList = new LinkedList<Recipient>();
Recipient ccRecipients = new Recipient();
EmailAddress emailAddress1 = new EmailAddress();
emailAddress1.address = "danas@contoso.onmicrosoft.com";
ccRecipients.emailAddress = emailAddress1;
ccRecipientsList.add(ccRecipients);
message.ccRecipients = ccRecipientsList;

boolean saveToSentItems = false;

graphClient.me()
	.sendMail(UserSendMailParameterSet
		.newBuilder()
		.withMessage(message)
		.withSaveToSentItems(saveToSentItems)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewSendMailPostRequestBody()
message := graphmodels.NewMessage()
subject := "Meet for lunch?"
message.SetSubject(&subject) 
body := graphmodels.NewItemBody()
contentType := graphmodels.TEXT_BODYTYPE 
body.SetContentType(&contentType) 
content := "The new cafeteria is open."
body.SetContent(&content) 
message.SetBody(body)


recipient := graphmodels.NewRecipient()
emailAddress := graphmodels.NewEmailAddress()
address := "frannis@contoso.onmicrosoft.com"
emailAddress.SetAddress(&address) 
recipient.SetEmailAddress(emailAddress)

toRecipients := []graphmodels.Recipientable {
	recipient,

}
message.SetToRecipients(toRecipients)


recipient := graphmodels.NewRecipient()
emailAddress := graphmodels.NewEmailAddress()
address := "danas@contoso.onmicrosoft.com"
emailAddress.SetAddress(&address) 
recipient.SetEmailAddress(emailAddress)

ccRecipients := []graphmodels.Recipientable {
	recipient,

}
message.SetCcRecipients(ccRecipients)
requestBody.SetMessage(message)
saveToSentItems := false
requestBody.SetSaveToSentItems(&saveToSentItems) 

graphClient.Me().SendMail().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Users.Actions

$params = @{
	Message = @{
		Subject = "Meet for lunch?"
		Body = @{
			ContentType = "Text"
			Content = "The new cafeteria is open."
		}
		ToRecipients = @(
			@{
				EmailAddress = @{
					Address = "frannis@contoso.onmicrosoft.com"
				}
			}
		)
		CcRecipients = @(
			@{
				EmailAddress = @{
					Address = "danas@contoso.onmicrosoft.com"
				}
			}
		)
	}
	SaveToSentItems = "false"
}

# A UPN can also be used as -UserId.
Send-MgUserMail -UserId $userId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new SendMailPostRequestBody();
$message = new Message();
$message->setSubject('Meet for lunch?');

$messageBody = new ItemBody();
$messageBody->setContentType(new BodyType('text'));

$messageBody->setContent('The new cafeteria is open.');


$message->setBody($messageBody);
$toRecipientsRecipient1 = new Recipient();
$toRecipientsRecipient1EmailAddress = new EmailAddress();
$toRecipientsRecipient1EmailAddress->setAddress('frannis@contoso.onmicrosoft.com');


$toRecipientsRecipient1->setEmailAddress($toRecipientsRecipient1EmailAddress);

$toRecipientsArray []= $toRecipientsRecipient1;
$message->setToRecipients($toRecipientsArray);


$ccRecipientsRecipient1 = new Recipient();
$ccRecipientsRecipient1EmailAddress = new EmailAddress();
$ccRecipientsRecipient1EmailAddress->setAddress('danas@contoso.onmicrosoft.com');


$ccRecipientsRecipient1->setEmailAddress($ccRecipientsRecipient1EmailAddress);

$ccRecipientsArray []= $ccRecipientsRecipient1;
$message->setCcRecipients($ccRecipientsArray);



$requestBody->setMessage($message);
$requestBody->setSaveToSentItems(false);



$graphServiceClient->me()->sendMail()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

Here is an example of the response.

HTTP/1.1 202 Accepted

Example 2: Create a message with custom Internet message headers and send the message

Request

HTTP

POST https://graph.microsoft.com/v1.0/me/sendMail
Content-type: application/json

{
  "message": {
    "subject": "9/9/2018: concert",
    "body": {
      "contentType": "HTML",
      "content": "The group represents Nevada."
    },
    "toRecipients": [
      {
        "emailAddress": {
          "address": "AlexW@contoso.OnMicrosoft.com"
        }
      }
    ],
    "internetMessageHeaders":[
      {
        "name":"x-custom-header-group-name",
        "value":"Nevada"
      },
      {
        "name":"x-custom-header-group-id",
        "value":"NV001"
      }
    ]
  }
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Microsoft.Graph.Me.SendMail.SendMailPostRequestBody
{
	Message = new Message
	{
		Subject = "9/9/2018: concert",
		Body = new ItemBody
		{
			ContentType = BodyType.Html,
			Content = "The group represents Nevada.",
		},
		ToRecipients = new List<Recipient>
		{
			new Recipient
			{
				EmailAddress = new EmailAddress
				{
					Address = "AlexW@contoso.OnMicrosoft.com",
				},
			},
		},
		InternetMessageHeaders = new List<InternetMessageHeader>
		{
			new InternetMessageHeader
			{
				Name = "x-custom-header-group-name",
				Value = "Nevada",
			},
			new InternetMessageHeader
			{
				Name = "x-custom-header-group-id",
				Value = "NV001",
			},
		},
	},
};
await graphClient.Me.SendMail.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const sendMail = {
  message: {
    subject: '9/9/2018: concert',
    body: {
      contentType: 'HTML',
      content: 'The group represents Nevada.'
    },
    toRecipients: [
      {
        emailAddress: {
          address: 'AlexW@contoso.OnMicrosoft.com'
        }
      }
    ],
    internetMessageHeaders: [
      {
        name: 'x-custom-header-group-name',
        value: 'Nevada'
      },
      {
        name: 'x-custom-header-group-id',
        value: 'NV001'
      }
    ]
  }
};

await client.api('/me/sendMail')
	.post(sendMail);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

Message message = new Message();
message.subject = "9/9/2018: concert";
ItemBody body = new ItemBody();
body.contentType = BodyType.HTML;
body.content = "The group represents Nevada.";
message.body = body;
LinkedList<Recipient> toRecipientsList = new LinkedList<Recipient>();
Recipient toRecipients = new Recipient();
EmailAddress emailAddress = new EmailAddress();
emailAddress.address = "AlexW@contoso.OnMicrosoft.com";
toRecipients.emailAddress = emailAddress;
toRecipientsList.add(toRecipients);
message.toRecipients = toRecipientsList;
LinkedList<InternetMessageHeader> internetMessageHeadersList = new LinkedList<InternetMessageHeader>();
InternetMessageHeader internetMessageHeaders = new InternetMessageHeader();
internetMessageHeaders.name = "x-custom-header-group-name";
internetMessageHeaders.value = "Nevada";
internetMessageHeadersList.add(internetMessageHeaders);
InternetMessageHeader internetMessageHeaders1 = new InternetMessageHeader();
internetMessageHeaders1.name = "x-custom-header-group-id";
internetMessageHeaders1.value = "NV001";
internetMessageHeadersList.add(internetMessageHeaders1);
message.internetMessageHeaders = internetMessageHeadersList;

graphClient.me()
	.sendMail(UserSendMailParameterSet
		.newBuilder()
		.withMessage(message)
		.withSaveToSentItems(null)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewSendMailPostRequestBody()
message := graphmodels.NewMessage()
subject := "9/9/2018: concert"
message.SetSubject(&subject) 
body := graphmodels.NewItemBody()
contentType := graphmodels.HTML_BODYTYPE 
body.SetContentType(&contentType) 
content := "The group represents Nevada."
body.SetContent(&content) 
message.SetBody(body)


recipient := graphmodels.NewRecipient()
emailAddress := graphmodels.NewEmailAddress()
address := "AlexW@contoso.OnMicrosoft.com"
emailAddress.SetAddress(&address) 
recipient.SetEmailAddress(emailAddress)

toRecipients := []graphmodels.Recipientable {
	recipient,

}
message.SetToRecipients(toRecipients)


internetMessageHeader := graphmodels.NewInternetMessageHeader()
name := "x-custom-header-group-name"
internetMessageHeader.SetName(&name) 
value := "Nevada"
internetMessageHeader.SetValue(&value) 
internetMessageHeader1 := graphmodels.NewInternetMessageHeader()
name := "x-custom-header-group-id"
internetMessageHeader1.SetName(&name) 
value := "NV001"
internetMessageHeader1.SetValue(&value) 

internetMessageHeaders := []graphmodels.InternetMessageHeaderable {
	internetMessageHeader,
	internetMessageHeader1,

}
message.SetInternetMessageHeaders(internetMessageHeaders)
requestBody.SetMessage(message)

graphClient.Me().SendMail().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Users.Actions

$params = @{
	Message = @{
		Subject = "9/9/2018: concert"
		Body = @{
			ContentType = "HTML"
			Content = "The group represents Nevada."
		}
		ToRecipients = @(
			@{
				EmailAddress = @{
					Address = "AlexW@contoso.OnMicrosoft.com"
				}
			}
		)
		InternetMessageHeaders = @(
			@{
				Name = "x-custom-header-group-name"
				Value = "Nevada"
			}
			@{
				Name = "x-custom-header-group-id"
				Value = "NV001"
			}
		)
	}
}

# A UPN can also be used as -UserId.
Send-MgUserMail -UserId $userId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new SendMailPostRequestBody();
$message = new Message();
$message->setSubject('9/9/2018: concert');

$messageBody = new ItemBody();
$messageBody->setContentType(new BodyType('html'));

$messageBody->setContent('The group represents Nevada.');


$message->setBody($messageBody);
$toRecipientsRecipient1 = new Recipient();
$toRecipientsRecipient1EmailAddress = new EmailAddress();
$toRecipientsRecipient1EmailAddress->setAddress('AlexW@contoso.OnMicrosoft.com');


$toRecipientsRecipient1->setEmailAddress($toRecipientsRecipient1EmailAddress);

$toRecipientsArray []= $toRecipientsRecipient1;
$message->setToRecipients($toRecipientsArray);


$internetMessageHeadersInternetMessageHeader1 = new InternetMessageHeader();
$internetMessageHeadersInternetMessageHeader1->setName('x-custom-header-group-name');

$internetMessageHeadersInternetMessageHeader1->setValue('Nevada');


$internetMessageHeadersArray []= $internetMessageHeadersInternetMessageHeader1;
$internetMessageHeadersInternetMessageHeader2 = new InternetMessageHeader();
$internetMessageHeadersInternetMessageHeader2->setName('x-custom-header-group-id');

$internetMessageHeadersInternetMessageHeader2->setValue('NV001');


$internetMessageHeadersArray []= $internetMessageHeadersInternetMessageHeader2;
$message->setInternetMessageHeaders($internetMessageHeadersArray);



$requestBody->setMessage($message);


$graphServiceClient->me()->sendMail()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

Here is an example of the response.

HTTP/1.1 202 Accepted

Example 3: Create a message with a file attachment and send the message

Request

HTTP

POST https://graph.microsoft.com/v1.0/me/sendMail
Content-type: application/json

{
  "message": {
    "subject": "Meet for lunch?",
    "body": {
      "contentType": "Text",
      "content": "The new cafeteria is open."
    },
    "toRecipients": [
      {
        "emailAddress": {
          "address": "meganb@contoso.onmicrosoft.com"
        }
      }
    ],
    "attachments": [
      {
        "@odata.type": "#microsoft.graph.fileAttachment",
        "name": "attachment.txt",
        "contentType": "text/plain",
        "contentBytes": "SGVsbG8gV29ybGQh"
      }
    ]
  }
}

C#

var graphClient = new GraphServiceClient(requestAdapter);

var requestBody = new Microsoft.Graph.Me.SendMail.SendMailPostRequestBody
{
	Message = new Message
	{
		Subject = "Meet for lunch?",
		Body = new ItemBody
		{
			ContentType = BodyType.Text,
			Content = "The new cafeteria is open.",
		},
		ToRecipients = new List<Recipient>
		{
			new Recipient
			{
				EmailAddress = new EmailAddress
				{
					Address = "meganb@contoso.onmicrosoft.com",
				},
			},
		},
		Attachments = new List<Attachment>
		{
			new Attachment
			{
				OdataType = "#microsoft.graph.fileAttachment",
				Name = "attachment.txt",
				ContentType = "text/plain",
				AdditionalData = new Dictionary<string, object>
				{
					{
						"contentBytes" , "SGVsbG8gV29ybGQh"
					},
				},
			},
		},
	},
};
await graphClient.Me.SendMail.PostAsync(requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

JavaScript

const options = {
	authProvider,
};

const client = Client.init(options);

const sendMail = {
  message: {
    subject: 'Meet for lunch?',
    body: {
      contentType: 'Text',
      content: 'The new cafeteria is open.'
    },
    toRecipients: [
      {
        emailAddress: {
          address: 'meganb@contoso.onmicrosoft.com'
        }
      }
    ],
    attachments: [
      {
        '@odata.type': '#microsoft.graph.fileAttachment',
        name: 'attachment.txt',
        contentType: 'text/plain',
        contentBytes: 'SGVsbG8gV29ybGQh'
      }
    ]
  }
};

await client.api('/me/sendMail')
	.post(sendMail);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Java

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

Message message = new Message();
message.subject = "Meet for lunch?";
ItemBody body = new ItemBody();
body.contentType = BodyType.TEXT;
body.content = "The new cafeteria is open.";
message.body = body;
LinkedList<Recipient> toRecipientsList = new LinkedList<Recipient>();
Recipient toRecipients = new Recipient();
EmailAddress emailAddress = new EmailAddress();
emailAddress.address = "meganb@contoso.onmicrosoft.com";
toRecipients.emailAddress = emailAddress;
toRecipientsList.add(toRecipients);
message.toRecipients = toRecipientsList;
LinkedList<Attachment> attachmentsList = new LinkedList<Attachment>();
FileAttachment attachments = new FileAttachment();
attachments.name = "attachment.txt";
attachments.contentType = "text/plain";
attachments.contentBytes = Base64.getDecoder().decode("SGVsbG8gV29ybGQh");
attachmentsList.add(attachments);
AttachmentCollectionResponse attachmentCollectionResponse = new AttachmentCollectionResponse();
attachmentCollectionResponse.value = attachmentsList;
AttachmentCollectionPage attachmentCollectionPage = new AttachmentCollectionPage(attachmentCollectionResponse, null);
message.attachments = attachmentCollectionPage;

graphClient.me()
	.sendMail(UserSendMailParameterSet
		.newBuilder()
		.withMessage(message)
		.withSaveToSentItems(null)
		.build())
	.buildRequest()
	.post();

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Go

//THE GO SDK IS IN PREVIEW. NON-PRODUCTION USE ONLY
graphClient := msgraphsdk.NewGraphServiceClientWithCredentials(cred, scopes)

requestBody := graphmodels.NewSendMailPostRequestBody()
message := graphmodels.NewMessage()
subject := "Meet for lunch?"
message.SetSubject(&subject) 
body := graphmodels.NewItemBody()
contentType := graphmodels.TEXT_BODYTYPE 
body.SetContentType(&contentType) 
content := "The new cafeteria is open."
body.SetContent(&content) 
message.SetBody(body)


recipient := graphmodels.NewRecipient()
emailAddress := graphmodels.NewEmailAddress()
address := "meganb@contoso.onmicrosoft.com"
emailAddress.SetAddress(&address) 
recipient.SetEmailAddress(emailAddress)

toRecipients := []graphmodels.Recipientable {
	recipient,

}
message.SetToRecipients(toRecipients)


attachment := graphmodels.NewAttachment()
name := "attachment.txt"
attachment.SetName(&name) 
contentType := "text/plain"
attachment.SetContentType(&contentType) 
additionalData := map[string]interface{}{
	"contentBytes" : "SGVsbG8gV29ybGQh", 
}
attachment.SetAdditionalData(additionalData)

attachments := []graphmodels.Attachmentable {
	attachment,

}
message.SetAttachments(attachments)
requestBody.SetMessage(message)

graphClient.Me().SendMail().Post(context.Background(), requestBody, nil)

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PowerShell

Import-Module Microsoft.Graph.Users.Actions

$params = @{
	Message = @{
		Subject = "Meet for lunch?"
		Body = @{
			ContentType = "Text"
			Content = "The new cafeteria is open."
		}
		ToRecipients = @(
			@{
				EmailAddress = @{
					Address = "meganb@contoso.onmicrosoft.com"
				}
			}
		)
		Attachments = @(
			@{
				"@odata.type" = "#microsoft.graph.fileAttachment"
				Name = "attachment.txt"
				ContentType = "text/plain"
				ContentBytes = "SGVsbG8gV29ybGQh"
			}
		)
	}
}

# A UPN can also be used as -UserId.
Send-MgUserMail -UserId $userId -BodyParameter $params

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

PHP

<?php

// THIS SNIPPET IS A PREVIEW FOR THE KIOTA BASED SDK. NON-PRODUCTION USE ONLY
$graphServiceClient = new GraphServiceClient($requestAdapter);

$requestBody = new SendMailPostRequestBody();
$message = new Message();
$message->setSubject('Meet for lunch?');

$messageBody = new ItemBody();
$messageBody->setContentType(new BodyType('text'));

$messageBody->setContent('The new cafeteria is open.');


$message->setBody($messageBody);
$toRecipientsRecipient1 = new Recipient();
$toRecipientsRecipient1EmailAddress = new EmailAddress();
$toRecipientsRecipient1EmailAddress->setAddress('meganb@contoso.onmicrosoft.com');


$toRecipientsRecipient1->setEmailAddress($toRecipientsRecipient1EmailAddress);

$toRecipientsArray []= $toRecipientsRecipient1;
$message->setToRecipients($toRecipientsArray);


$attachmentsAttachment1 = new Attachment();
$attachmentsAttachment1->set@odatatype('#microsoft.graph.fileAttachment');

$attachmentsAttachment1->setName('attachment.txt');

$attachmentsAttachment1->setContentType('text/plain');

$additionalData = [
'contentBytes' => 'SGVsbG8gV29ybGQh', 
];
$attachmentsAttachment1->setAdditionalData($additionalData);



$attachmentsArray []= $attachmentsAttachment1;
$message->setAttachments($attachmentsArray);



$requestBody->setMessage($message);


$graphServiceClient->me()->sendMail()->post($requestBody);

For details about how to add the SDK to your project and create an authProvider instance, see the SDK documentation.

Response

Here is an example of the response.

HTTP/1.1 202 Accepted

Example 4: Send a new message using MIME format

Request

POST https://graph.microsoft.com/v1.0/me/sendMail
Content-type: text/plain

RnJvbTogQWxleCBXaWxiZXIgPEFsZXhXQGNvbnRvc28uY29tPgpUbzogTWVnYW4gQm93ZW4gPE1l
Z2FuQkBjb250b3NvLmNvbT4KU3ViamVjdDogSW50ZXJuYWwgUmVzdW1lIFN1Ym1pc3Npb246IFNh
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Response

Here is an example of the response.

HTTP/1.1 202 Accepted

If the request body includes malformed MIME content, this method returns the following error message.

HTTP/1.1 400 Bad Request
Content-type: application/json

{
    "error": {
        "code": "ErrorMimeContentInvalidBase64String",
        "message": "Invalid base64 string for MIME content."
    }
}