aws sqs send-message-batch
You can use SendMessageBatch to send up to 10 messages to the specified queue by assigning either identical or different values to each message (or by not assigning values at all). AWS CLI reference
2 options Its page in the AWS CLI reference
Options
--entriesA list of SendMessageBatchRequestEntry items.--queue-urlThe URL of the Amazon SQS queue to which batched messages are sent.