Thanks, I didn't know about mail-tester.com and similar tools. I am definitely not spamming people, and I had SPF, DKIM and reverse DNS set up, but I don't thin

Thanks, I didn't know about mail-tester.com and similar tools. I am definitely not spamming people, and I had SPF, DKIM and reverse DNS set up, but I don't think I ever did the blocklists part. Something to keep in mind if my projects ever grow too big to fit in the free tiers of Mailgun and similar services.