By default, content that is considered for any given newsletter (your ‘since last newsletter’ content ‘pool’) is only comprised of articles published by your sources since the last newsletter send. If though, you wanted specific sources to have their articles considered further back than that, you can adjust the evergreen date. For example, if you would like articles from Harvard Business Review to be considered even if they were up to two months old, you would set your Evergreen Date to “2 months”.
