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The user requests the ability to add the version number to the X-Mailer header to improve spam test results. Currently, the header only shows "X-Mailer: BillionMail".
Please add the version for X-mailer header. Now header only "X-Mailer: BillionMail" It can improve the results in spamtests: <img width="782" height="112" alt="Image" src="https://github.com/user-attachments/assets/c486fbf2-4156-48ef-9155-370204aa3996" />