Remove all unsent emails from FastSender object.
[Syntax] Visual C++: HRESULT ClearQueuedMails() Visual Basic: ClearQueuedMails()
How does FastSender work?
FastSender has an inner threading pool based on MaxThreads count. Firstly, Send or SendByPickup submits email to FastSender mail queue. Secondly threading pool retrieves email from mail queue and send it out. Finally OnSent event informs that the email was sent successfully or unsuccessfully.
No. of worker threads in the threading pool of FastSender is automatically adjusted based on the actual usage. The maximum no. of worker threads is up to the value of MaxThread property specified.
Send Bulk Email with Multiple Threads in Visual C++
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Programming with FastSender
Work with EASendMail Service(Mail Queuing)