changelog

Mimeo 0.3.4: faster subscription reconciliation, one at a time

API subscription reconciliation now finishes in milliseconds and runs one at a time, and robots.txt no longer points at a placeholder sitemap.

By Mimeo · Published 2026-11-02

Version 0.3.4

Improvements

• Subscription reconciliation over the API now finishes in milliseconds instead of tens of seconds when you have a large queue of waiting emails, and it still makes the same safety decisions. See Subscription reconciliation.
• Mimeo now runs one subscription reconciliation at a time. A request that arrives while another is running gets 429 Too Many Requests with Retry-After: 5 and changes nothing, so your integration should wait five seconds and try again. See Subscription reconciliation.

Fixes

• Repeated subscription reconciliation calls can no longer tie up your Mimeo so much that tracked links in your emails time out. See Subscription reconciliation.
• Your Mimeo's robots.txt no longer points search engines at a placeholder sitemap address.