Limited with "N" messages per hour
Many SMTP servers
have a limitation for the number of messages they will send from one user per
hour. They will not accept anything over the limit or even block the user for a
If your SMTP server doesn't have any limitation then specify a large number like 10000000 or Select
Multi-Thread mode with 1 thread.
If your SMTP Server allows parallel connections, you can speed up sending using this mode.
Timeout - maximum time to send 1 message, to find and stop hung tasks
Messages per connection - specify how many messages alows smtp server to send per 1 connection. The higher the value the faster the sending.
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