AWS SES SDK send email with attachments

Question

I'm using the official AWS Golang SDK to integrate with SES but can't find any information about how to add some attachments (pdf file represented as []byte in code) to the email.

Could you help me?

The current email sending code looks like this:

sesEmailInput := &ses.SendEmailInput{
    Destination: &ses.Destination{
        ToAddresses: []*string{aws.String("To address")},
    },
    Message: &ses.Message{
        Subject: &ses.Content{
            Data: aws.String("Some text"),
        },
        Body: &ses.Body{
            Html: &ses.Content{
                Data: aws.String("Some Text"),
            },
        },
    },
    Source: aws.String("From address"),
    ReplyToAddresses: []*string{
        aws.String("From address"),
    },
}
if _, err := s.sesSession.SendEmail(sesEmailInput); err != nil {
    return err
}

Solution

To send attachments, use the SendRawEmail API instead of SendEmail. AWS documentation will generally refer to this as constructing a 'raw message' instead of explicitly calling out how to send attachments.

Example

From the AWS SDK for Go API Reference, linked below:

params := &ses.SendRawEmailInput{
    RawMessage: &ses.RawMessage{ // Required
        Data: []byte("PAYLOAD"), // Required
    },
    ConfigurationSetName: aws.String("ConfigurationSetName"),
    Destinations: []*string{
        aws.String("Address"), // Required
        // More values...
    },
    FromArn:       aws.String("AmazonResourceName"),
    ReturnPathArn: aws.String("AmazonResourceName"),
    Source:        aws.String("Address"),
    SourceArn:     aws.String("AmazonResourceName"),
    Tags: []*ses.MessageTag{
        { // Required
            Name:  aws.String("MessageTagName"),  // Required
            Value: aws.String("MessageTagValue"), // Required
        },
        // More values...
    },
}
resp, err := svc.SendRawEmail(params)

Further Reading

• Amazon SES API Reference - SendRawEmail
• AWS SDK for Go API Reference - SendRawEmail
• AWS SES Documentation - Sending Raw Email Using the Amazon SES API - This is a good primer for email standards and constructing raw messages (including a section about attachments).

Comments

[i.van]

Thank you so much! Did I understood correctly that PAYLOAD must be base64 encoded? Also, where can I see which MIME headers are required?

[Anthony Neace]

The SDK should base64 encode Data in RawMessage for you (reference), and for more info on headers check here: docs.aws.amazon.com/ses/latest/DeveloperGuide/email-format.h‌​tml

[Elmatsidis Paul]

Here is good example stackoverflow.com/questions/49364199/…