We publish a substitute list only where a record says what kind of product it is. Plunk's does not yet, so this page names none. The Email category lists every offer we track alongside it.
Free tier reduced from 3,000 to 1,000 emails/month. Plunk's home page said "Send up to 3000 emails for free every month" in the Internet Archive's copy of 2026-03-06 and "1,000 emails free every month. Then $0.001 per email" in its copy of 2026-03-07. Source ↗