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A lot of developers seem to underestimate how fast well-written software can process things...

Where I work, we send over a billion emails a month (blog subscriptions) and 400k is not even a blip.

Yes but that’s on top of what GitHub is already sending, plus it must be multiplied by the number of comments left on top of that. It feels like 35 straight minutes of 100% usage isn’t great on any system. It presumably sent 61 million emails.

> Yes but that’s on top of what GitHub is already sending

When you send at the volume someone like GitHub sends, you will always see peaks and valleys in your sending patterns that are much larger than 400k. It might cause an issue if they were already under peak load, but even then it would just take a bit longer.

GitHub can afford more than one computer to send their emails.

Yep, the mail bodies would be cached out while the rest is just the addresses in queues.

oh.