My email has already been taken -- can I merge the two Gitlab accounts?

I just signed up for GitLab the other day. I signed up by logging in with Twitter. Later I added an email and password, added an SSH key, and reserved a GitLab URL that I like with my handle. Now I want to associate my other main email address with this GitLab account. However, I’m getting an error message saying that that email address has already been taken. I may have signed up for GitLab 2-3 years ago using that email address and then forgotten about it. Is it possible for me to merge the two accounts now?

I don’t think there’s a merge account feature available for GitLab but I could be wrong.

If you have a self-hosted instance of GitLab though, you can if you are willing to - delete the old account so you can reuse the email address.