Can I create an email in Benchmark Email and send it from another program?
No. Using our services to create or modify email correspondence and then using another application to send it out is a violation of Benchmark Email policies. Also, if you were to use an outside application, you would not have access to tracking, opt-outs or other key features that are offered through your Benchmark Email account. These features are useful tools to help you build and maintain successful email marketing relationships.
About Benchmark Email March 28, 2019