Giving digests high priority so they cut through email throttling limits

Recently, AWS SES dramatically reduced their daily email allowance on the free tier from about 60K to 3K emails monthly.

Our small forum is hitting this new limit half way through this month. We tend to have bursts of high activity interspersed with weeks of quiet traffic.

So I looked at ways to reduce throughput, increasing and decreasing various email parameters from their defaults so less emails would be sent without fundamentally impacting the Discourse experience.

One thing that stood out is the high value of digests vs the throwaway nature of much other email traffic to our members, who often watch categories but don’t actively manage their preferences.

If I throttle the user emails per day parameter, of course this stops both low value and high value mails. Can the digests be given priority/override?

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