Great to hear they could the accounts quota.
Larger thread on email caps
https://community.shopify.com/topic/1339544
I cannot find any mention in any shopify’s docs of this 2.5k weekly rule; some online mentions though but no sources.
https://help.shopify.com/en/manual/promoting-marketing/create-marketing/shopify-email
https://help.shopify.com/en/manual/promoting-marketing/create-marketing/shopify-email/faq
The 10K increase was back in March 21, 2022 for free mails/mth for plans.
It used to be 2,500 ← hint.
https://changelog.shopify.com/posts/more-free-emails-with-shopify-email
I’m doubtful it’s only a bug , seems like part of a crude anti-abuse throttling measure they are fine tuning.
So the math is obviously 10k/4 but that is not intuitive in the context of monthly quota.
In the technical sense it’s not odd that it’s specifically 2,500 per week when the monthly quota is now 10k; it would be odd and inconvenient if there was a daily quota ~357.
Since there is no rollover , at the end of merchants billing cycle alot of merchant will want to try using all of the quota on the last day, then the next day send out the next quota max.
Effectively sending out 20,000 emails in a 24 hour period for free, if you are a platform you have to guard against that possible behavior multiplied by ~4 million stores on the platform ; hammering the email system with 80,000,000,000 billion emails. Same reason why I’d never expect email quotas to rollover between months.