# Plunk: what AI models say (September 2026)

Source: Memetik Index, https://www.memetik.ai/vendors/plunk
Website: https://www.useplunk.com

Plunk was named in 1 of 50 AI answers across 1 category. Best position: Transactional email, 2% answer share, ranked #12, named first in 0%.

## What Plunk is

Plunk is an open-source email platform for teams that would otherwise use separate tools for transactional sending, marketing campaigns and automation. It keeps these activities on one contact list, with unlimited contacts. Its free plan includes 1,000 emails a month, and paid use costs $0.001 per email.

Teams send transactional emails and campaigns from that shared list. Workflows begin when an app sends an event, then can include emails, delays, branches and webhooks. Segments target subsets of contacts using contact fields, custom data and email activity. Plunk also supports inbound email through an MX record, turning replies into contacts that can start workflows.

Pricing: The free plan includes 1,000 emails per month, while the paid plan costs $0.001 per email; contacts are unlimited.
(From Plunk's own website, read 2026-09-02.)

## By category

| Category | Rank | Answer share | Named first | Models |
|---|---|---|---|---|
| Transactional email (https://www.memetik.ai/index/transactional-email) | #12 of 12 | 2% | 0% | Claude Opus 5 |