Using n8n to scrub emails from a list and put the good ones into a clean list in DB and SENDY. Nice little helper, .... imported 340k addresses into a mysql database, queried 10k then send through a free email checker ( https://disify.com ... its basic but works pretty well, format, disposable, dns and domain checks), sending the good emails to a new clean table in the DB and into SENDY where I can send 100k emails per day with no sweat using Amazons SES. Now to tie in MX and domain blacklist checks.