Consultancy form does not provide success/fail feedback (user is left wondering if it worked)

Description

On the consultancy request form (https://about.gitlab.com/consultancy/#consultancy-form), after the form is filled out and submitted, there is no feedback concerning whether it went through okay (no success or failure feedback to the user), hence the user is left to wonder if it worked.

In addition, there is no "we got it" email even though the form requests an email from the user.

Proposal

Send an email to the user when the form succeeds saying, essentially, "we got it and we will be contacting you soon".

In addition, do the same on the web page containing the form.

Links / references

https://about.gitlab.com/consultancy/#consultancy-form

Documentation blurb

Overview

What is it?

Feedback on form success/failure. A follow-up.

Why should someone use this feature?

N/A

What is the underlying (business) problem?

No one in business wants to be left wondering if the other party is responsive or not. That's not a good place to be.

How do you use this feature?

N/A

Use cases

Who is this for? Provide one or more use cases.

This is for anyone who uses the consultancy form.

Feature checklist

Make sure these are completed before closing the issue, with a link to the relevant commit.

Edited by Greg Smethells