How Do I Batch Send Thousands of Emails in Bubble Without Postmark Bulk API?

Hey everyone,

I don’t currently have access to Postmark’s bulk sending feature, so I need to manually iterate through a few thousand emails using Bubble. What’s the best way to schedule a backend workflow that can automatically process emails in batches — like 1–500, 501–1000, and so on — without hitting API limits?

Ideally, I want a “set it and forget it” setup that can handle large lists. We’re expecting between 15,000 to 20,000 recipients by the end of the year, so scalability is important.

Any tips or workflow patterns that have worked well for you would be much appreciated!

Thanks

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