Chilkat smtpQ SMTP Service to Send Queued Email Chilkat smtpQ is a companion product that works with each of Chilkat's email components and runs as a Windows Service. Each of the Chilkat email components now has a method, SendQ, that dramatically ... Cost: $449 Buy full version       Trial version           Descriptions Chilkat smtpQ SMTP Service to Send Queued Email: Chilkat smtpQ is a companion product that works with each of Chilkat's email components and runs as a Windows Service. Each of the Chilkat email components now has a method, SendQ, that dramatically increases sending performance by queuing emails directly to the smtpQ's queue directory for immediate delivery.