使用Python调用AWS SES发送多收件人邮件时遇非法地址错误求助

Hey there, let's break down why you're hitting that "Illegal address" error and fix it up quickly.

The Core Issue #

Looking at your code, the main problem is how you're passing recipient addresses to SES:

recipients = ["cosmoandysysmo@gmail.com","snehil@codedata.io"]
RECIPIENT = ", ".join(recipients)
# Then later...
'ToAddresses': [
    RECIPIENT,
],

AWS SES's send_email API expects ToAddresses to be a list of individual email address strings, not a single string with multiple addresses separated by commas. When you pass that joined string, SES treats the entire thing as one invalid email address, hence the error.

Quick Fixes #

1. Remove the unnecessary join call
   Just pass your original recipients list directly to ToAddresses:

   'ToAddresses': recipients,
   

2. Fix the sender address format
   Your sender string uses HTML escape characters (< and >) instead of actual angle brackets. Replace those with < and > so SES can parse the sender correctly:

   SENDER = "Snehil singh <snehil@codedata.io>"
   

Modified Code Snippet #

Here's how the corrected send_email call should look:

response = client.send_email(
    Destination={
        'ToAddresses': recipients,  # Use the original list directly
    },
    Message={
        'Body': {
            'Text': {
                'Charset': CHARSET,
                'Data': BODY_TEXT,
            },
        },
        'Subject': {
            'Charset': CHARSET,
            'Data': SUBJECT,
        },
    },
    Source="Snehil singh <snehil@codedata.io>",  # Fixed sender format
    # ConfigurationSetName=CONFIGURATION_SET,
)

Additional Checks to Rule Out Other Issues #

• If your AWS SES account is still in sandbox mode, all recipient addresses must be verified in SES (including cosmoandysysmo@gmail.com if you haven't verified it yet).
• Double-check that your AWS credentials have the ses:SendEmail permission attached.
• Confirm your AWS_REGION matches the one where your SES identities are verified.

That should get your emails sending without the illegal address error!

内容的提问来源于stack exchange，提问作者snehil singh