I run marketing email databases. This is cute, but it doesn't actually do anything in most systems - either the employees all already get the marketing emails or there is a system-wide rule to suppress against the email domain. If you actually want to (potentially) break something, try submitting some obscure characters or malformed html into some fields. Blank spaces in emails can particularly be a nuisance. And if…
I would also recommend naming yourself Viagra, Cialis or CBD.
We will often take your name and insert them into emails (for some dumb reasons around personalization supposedly increasing opens). But an email being stuffed full of spam words is a good way to get it flagged by anti-spam software and potentially hurt our sender reputation score.
You would probably have to do it en masse and use real inboxes. A couple other names you could use would be "free", "lovers", "singles", or any sort of mid word character substitution.