Avoid "Re:" and "Fwd" in email subject when sending via SMTP

Avoid "Re:" and "Fwd" in email subject when sending via SMTP

Hi,

I'm new and trying Zoho Mail.

I manage Zoho emails via Gmail, using the Zoho smtp to send emails.
When I do that "Re:" or "Fwd" are added to the subject of the emails I answer or forward.
How do I avoid that? I'd like to keep the subject untouched.

Thanks a lot for your help!