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Amazon EC2 users can send up to 2,000 free messages each day over Amazon's new Simple Email Service, for doing mailshots.
Amazon Simple Email Service (Amazon SES) integrates with other Amazon web services, enabling users to send marketing and transactional messages.
Built on the same technology Amazon uses itself, the service offers an API, which Amazon said allows businesses to efficiently and inexpensively communicate to their customers.
SES provides content filtering technologies to scan a business's outgoing e-mail messages to help avoid messages being blocked by spam filters.
The e-mail message is then either queued for sending or routed back to the sender for corrective action, Amazon said.
To help businesses further improve the quality of e-mail communications with their customers, Amazon SES provides a built-in feedback loop, which includes notifications of bounce-backs, failed and successful delivery attempts, and spam complaints.
Up to one Gbyte of data per month can be sent via SES at no charge. The rate for sending up to 10 Tbytes of data is $0.15 per Gbyte.