Ask for useful information
Keep the initial form proportionate. A project type, broad requirement and contact details may be enough to start. Collect more detail when it becomes useful.
Make responsibility clear
Route enquiries to a named role and define a realistic response expectation. A successful form submission is not the same as a sales conversation.
Review the whole journey
Check delivery, spam handling, mobile usability and follow-up. Review the quality of enquiries alongside their number.