# 1. Create dynamic body depending on status
if user_status == "paid":
    body = f"Hello paid user: {user.first_name} {user_status}"
else:
    body = f"Hello not paid user: {user.first_name} {user_status}"

# 2. Add it to recipient email substitutions
to_emails.append(
    To(
        email=user.user_email,
        name=user.first_name,
        substitutions={"-user_email-": user.user_email, "-email_body-": body},
        subject=f"Subject Goes Here {user.first_name}",
    )
),

# 3. Create a mail object with that substituted content
html_body = "<h1> -email_body- </h1>"
message = Mail(
    from_email=("sales@tendampya.com", "Tenda Mpya"),
    to_emails=to_emails,
    html_content=html_body,
    plain_text_content="Tenders posted today",
    is_multiple=True,
)