contact form; inquiry form
A web form used to send inquiries or messages to a company or organization.
Please use this contact form for inquiries.
Standard spelling using 問い合わせ (inquiry) + フォーム (form).
Variant with 合せ instead of 合わせ; less common but still seen.
Compound of 問い合わせ (inquiry) and フォーム (form, from English 'form').