MailReach

MailReach warms mailboxes, tracks reputation, runs spam tests, and checks domain and inbox health. It is positioned for B2B outreach teams that need warmup and deliverability diagnostics together, with pricing driven by mailbox count and spam test credits.

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, MailReach covers webhook coverage, event stream, and multi-tenant support, and does not cover inbound parsing, idempotency keys, 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: Yes
• 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. Helps monitor mailbox reputation, warmup behavior, blacklist status, SPF, DKIM, DMARC, and inbox placement test results.

B2B outbound teams that want warmup, spam testing, and reputation tracking in one product.

Transactional senders focused on opt-in product email.