Even if I send it by MAPISendMail without starting Outlook, it will not be sent immediately.If you start Outlook after this operation, it will be sent.
When Outlook is running, it will be sent immediately after the transmission screen is displayed in MAPISendMail.
I want to send it right away even if Outlook is not started.
Will the situation change depending on the MAPISendMail argument?
Or is it Outlook setting?
SMTP transmission protocols do not require password authentication, but
Some providers (mail servers) require a username password beforehand
Some configurations are only allowed to be sent after the .
Send in MAPISendMail
because this account is authenticated as Receive in Outlook
Maybe I can do it now.
Microsoft Network Monitor 3.4
https://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=4865
If you capture network packets and check the server's response, you may get some tips.
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