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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I can run MailCatcher or MailHog or Postfix or Sendmail or any number of other solutions, but there's not any other linux sysadmins here so something with an easy gui setup would be convenient so others can poke around if needed.
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