Github dislikes email "aliases" so much that they will shadow ban your otherwise normal activities for months, and once flagged, support will request not only a "valid" email domain but also that you remove the "alias" email from the account completely.
GitHub is owned by Microsoft and Microsoft also hates email aliases. May I recommend Port87. Microsoft and GitHub both accept the tagged addresses you use with Port87.
Thanks that's very nice of you! Let me know if I have to DM you my email or something else!
I see that you're behind that project, nice to have you there