Redirect in Netlify website from url to mobile app deeplink

I created a simple redirect rule in my netlify.toml file:

[[redirects]]
  from = "/my-url-example"
  to = "mymobileapp://home"
  status = 301
  force = true

However it’s not redirecting to the app deeplink.

I also tried to do the same thing from the _redirects file.

With deeplink, the 301 isn’t there.

# This doesn't do a 301 redirect, curl just gives me a 
# 200 OK.
/my-url-example    mymobileapp://home    301

# This is with the deeplink url rule set.
$ curl -sI https://staging.mywebsite.com/my-url-example
HTTP/2 200
cache-control: public, max-age=0, must-revalidate
content-length: 0
content-type: text/html; charset=UTF-8
date: Fri, 24 Jul 2020 16:19:15 GMT
etag: "020b9afec1d77d04f4f68c4b96888384-ssl"
strict-transport-security: max-age=31536000
age: 0
server: Netlify
x-nf-request-id: b3cdc18b-2fae-4ad8-a77e-677f399672ce-1257749

Removing the deeplink and adding a normal / starting string, the 301 is there.

# This does give me a proper 301 redirect.
/my-url-example    /test-test-test    301

$ curl -sI https://staging.mywebsite.com/my-url-example
HTTP/2 301
cache-control: public, max-age=0, must-revalidate
content-length: 0
date: Fri, 24 Jul 2020 16:20:40 GMT
location: /test-test-test
age: 0
server: Netlify
x-nf-request-id: 38b149a9-90a8-457c-a3a4-22ca9de1b929-11017228

How can I redirect a URL on my website to my mobile app via deeplink?

It seems in order for netlify to redirect the url must start with a /. Any workarounds?

That’s not true. The issue is that you have specified a protocol that might not be valid. I’ve never heard of a mymobileapp:// protocol. If you use https://, things will work with no issue. Can you provide some information on that protocol?