Has anyone seen a dataset or an example of the work of synonyms for email services on the Internet?

Question

Backend

We are solving an interesting problem. Users often make typos in email addresses, for example
qmail
gmil
gmal
It is quite obvious that the user meant gmail, and if not corrected, then at least draw the user's attention to such things, but for some reason no one has found such solutions.
Actually, the question consists of 2 parts:
1. Has anyone seen the successful implementation of such hints?
2. Did anyone have a ready-made dataset with a list of synonyms and services in sight? (paid or free doesn't matter)