Today’s Marketing
Share the rebuild with the numbers it moved
Resend

Share the rebuild with the numbers it moved

Resend posted on Nov 13, 2026 that it rebuilt its email API in Go. The post says it took 7 weeks and 140 PRs, and that the new API has been running in production at roughly half the median latency and one seventh the memory usage per task. The image is a bar chart of memory usage per task, Node against Go. A thread explains why they changed and how they kept both versions matching. The post passed 1,400 likes and 300 bookmarks.

Updated · By Blake Emal

Developers trust numbers more than adjectives. The effort, the time and the result in two lines tell buyers the team is careful with the API they depend on, and the chart makes the gap easy to see. To copy it, pick one engineering change your buyers feel.

  1. Pick one engineering change your buyers feel
  2. Say what it took in time and work
  3. Give the before and after numbers in plain words
  4. Add one chart and put the details in a thread

Posted Nov 13, 2026 with 1,432 likes and 100,078 views · Resend

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