Send mail without using smtp in outlook

[Sungkyu_min]

Hi..

Our organization's OUTLOOK was blocking sending SMTP.
Is it possible to send mail through the running OUTLOOK without using SMPT in `Spire.email`?.

I'm using 'interop.Outlook'.
Lately I've sometimes missed sending emails without getting any errors.
This issue seems to be missing one or two mails when sending alot of mail at once.

If it is possible to send mail through OUTLOOK running on PC without smpt, can my problem be solved?.

And, is `Spire.email` included in `spire.office` license?

[Wenly.Zhang]

Hello,

Thank you for your inquiry.
I apologize for the inconvenience, but currently, Spire.Email can only utilize SMTP for sending emails through Outlook. Furthermore, please rest assured that Spire.Email is included within the Spire.Office license.
If you have any other questions or concerns, please feel free to contact us anytime.

Sincerely,
Wenly
E-iceblue support team

[Skylar31]

Hey, Trying to bypass SMTP and use the local Outlook client for sending is a super common scenario, usually because of security restrictions!
The standard way to do this from code is using the MAPI (Messaging Application Programming Interface) protocols or the Outlook Object Model.
Since you're posting in the e-iceblue forum, I'm guessing you're using one of their libraries. Check if their API has a specific method that leverages the local Outlook Application instance (often called Application.ActiveWindow or similar) instead of requiring an external SMTP configuration.
If you can't find that, searching for "C# send email via Outlook Object Model" will give you plenty of examples that bypass SMTP entirely and use the user's logged-in profile.