This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Rohkem teavet

How To Accelerate Outbox Sending Rate

  • 1 vastus
  • 1 on selline probleem
  • 4 views
  • Viimati vastas mroots

more options

Hello !

I need to use thunderbird for very large email sending (30,000+ emails to send per day). We do very dynamic and personalized email sending, and Thunderbird is an absolutely fantastic tool for this job with all the plugins available for quick and efficient iterations on our content (thanks a lot guys!).

I have total control on the SMTP Server (max number of simultaneous connections etc.), however right now the main bottleneck to the sending is that the messages are processed one after the other from the Outbox. The throughput is 1 message per second, which I think is normal for SMTP. However this has a huge impact at such a volume (sending takes a whole day). I did all the tweaks I could think of such as disabling SSL to win half a second on each SMTP transaction.

Is there a hidden parameter that can be set to allow the Outbox to send more than one message at a time (either by opening multiple SMTP connections, or by doing some sort of multithreading ?

Hello ! I need to use thunderbird for very large email sending (30,000+ emails to send per day). We do very dynamic and personalized email sending, and Thunderbird is an absolutely fantastic tool for this job with all the plugins available for quick and efficient iterations on our content (thanks a lot guys!). I have total control on the SMTP Server (max number of simultaneous connections etc.), however right now the main bottleneck to the sending is that the messages are processed one after the other from the Outbox. The throughput is 1 message per second, which I think is normal for SMTP. However this has a huge impact at such a volume (sending takes a whole day). I did all the tweaks I could think of such as disabling SSL to win half a second on each SMTP transaction. Is there a hidden parameter that can be set to allow the Outbox to send more than one message at a time (either by opening multiple SMTP connections, or by doing some sort of multithreading ?

Muudetud mroots poolt

All Replies (1)

more options

Any idea ? It would be unfortunate to write a custom software just to accelerate the sending rate when Thunderbird fits the bill everywhere else.