Warmy

Warmy is an email warmup and deliverability platform for senders trying to build or repair mailbox reputation. The official accessible docs clearly describe a 7-day trial with one connected mailbox and limited daily seed emails. Paid pricing was not exposed in the crawled official pricing docs, so this profile avoids quoting third-party price claims.

An agent stack treats email as a two-way primitive. Inbound has to arrive as structured JSON a tool call can consume, sends have to be safe to retry when a model loop repeats itself, and every action needs an audit trail. A provider without inbound parsing only solves half the problem.

Against inbound parsing into tool calls and model-generated sends that must not duplicate, Warmy covers event stream and multi-tenant support, and does not cover inbound parsing, idempotency keys, webhook coverage, batch sending, and SDK breadth. Whether that gap matters depends on how central those are to the build.

• Inbound parsing: No
• Idempotency keys: No
• Webhooks: No
• Operating since: Not published
• Event stream: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Batch sending: No
• SDKs: None
• Multi-tenant: Yes

Not a sender. Warmup tools can create positive engagement signals, but they do not fix poor consent, bad lists, weak authentication, or irrelevant content.

Outbound teams evaluating a warmup workflow before scaling sender accounts.

Teams with poor list quality or authentication problems that need root-cause fixes first.