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Billing > Sales/Invoices tab
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After filtering the invoices, prepare to send them by clicking on Actions, and selecting Email Invoices/Statements.
Set the Template field to the email template you previously created.
Set the From email address where you would like to receive billing questions or notices about bounced emails from this round of invoices.
Check Select All to send all membership dues invoices (if shown). Critical if handling more than 500 invoices. This ensures that all of your members receive their invoice at the same time.
Review the message to make sure everything looks correct.
Click Send to email your invoices.