Munchable runs bulk service emails from client browser to avoid serverless pitfalls

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Munchable sends service emails to account holders from a client-side loop instead of a serverless function. This approach prevents campaign delivery failures if a serverless function times out mid-send. The client sends batches of 100 emails per request, using a cursor for resumability. The design ensures no recipient is skipped or emailed twice, even if accounts are modified during the send.

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