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        | matiasmf Newbie
 
  
 
 Joined: 03 November 2008
 Location: Argentina
 Online Status: Offline
 Posts: 2
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          Hi,
           | Posted: 03 November 2008 at 9:42am | IP Logged |   |  
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 |  I need to know the best way & faster to send a lot of emails from a .net newsletter application. I have lists of emails that haves 20,000 accounts... 4000 of hotmail, 3000 of gmail... i try to send directly by mx at works fine, but not so fast.... using message queue will upgrade the performance ?
 During mi testing i realice that if i have to send to the same mx the best way is making one single connection and a loop, message queue uses this method ?
 
 thanks
 
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        | Andrew AfterLogic Support
 
  
 
 Joined: 28 April 2006
 Location: United States
 Online Status: Offline
 Posts: 1189
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          Have you tried to increase Smtp.MaxThreadCount value?
           | Posted: 05 November 2008 at 4:28am | IP Logged |   |  
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 Sending to MX directly via Smtp.SendMailMerge (or Smtp.AddJob / Smtp.SendJobs) in multiple threads (Smtp.MaxThreadCount > 1) is the fastest way.
 
 Using MMQ won't increase the performance as it uses a relay server for sending messages. Moreover, MMQ is designed for limiting sending rate in case if recipients SMTP servers treat you as a spammer due to high sending rate.
 
 Best regards,
 Andrew
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