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.

Judged purely as an API. What the request contract guarantees on retry, how complete the webhook event coverage is, whether suppressions are readable and writable programmatically, and how much the message log retains when something needs debugging in production.

Against high-frequency programmatic sends where a missed delivery is a product failure, Warmy covers event stream, and does not cover idempotency keys, webhook coverage, the suppressions API, batch sending, and SDK breadth. Whether that gap matters depends on how central those are to the build.

• Idempotency keys: No
• Webhooks: No
• Event stream: Yes
• Operating since: Not published
• Suppressions API: No
• Best published rate per 1,000: Tiers not published in comparable form
• Batch sending: No
• SDKs: None
• Deliverability: Not a sender. Warmup tools can create positive engagement signals, but they do not fix poor consent, bad lists, weak authentication, or irrelevant content.

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.