• Use https:// at the start of the URL.
• Use & between query parameters (not ;).
• Do not leave raw template tokens like ${...} in the final URL. Resolve them before sending.
• If you absolutely cannot resolve them, percent-encode the tokens (${ → %24%7B, } → %7D) so the URL remains syntactically valid.
• Percent-encode non-ASCII characters (e.g., Ü → %C3%9C) or let your system encode them automatically.
• Ensure that the stored URL contains no spaces or unescaped characters.

Otherwise, providing a standard target URL is sufficient. Ron Orp delivers reporting on views and clicks for all campaigns.