We have a batch job that currently uses the version 2 api to push bulk updates from a main frame to constant contact. Due to the TLS 1.2 requirement, we were planning to rewrite the app to use the version 3 api, but the API does not appear to have an authentication route for automated system, the two listed pathes require user interaction for the authentication to occur. Is there another authentication option or if not another mechanism to provide automated feeds. Thanks,
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