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I currently have a batch which calls itself if it finds records still falling into scope. I am using a static boolean variable to do this. Now i have found out our email system cannot handle thousands of emails within seconds, so they have advised me to send 50 emails a minute instead. I can swap the batch size to 50 easily however i am not sure how i can have the batch wait 1 minute before calling itself, if it still has records to process.

Any ideas are welcome.

Thank you!

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There's a specific method for this, System.scheduleBatch, which can be called from the finish method to chain indefinitely:

global void finish(Database.BatchableContext context) {
    System.scheduleBatch(new BatchClassName(), 'NextJobInChain', 1);
}

Where the second parameter should be a unique job name, and the third parameter is the number of minutes to wait.

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