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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 tell you SMTP in Rust doesn't get enough love, also it's very difficult to get it right https://github.com/lettre/lettre/issues, so It'd be ridiculous to try to put it into the std.
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