Mails.ai Pricing 2026

Instant email inboxes for autonomous agents — no API keys, no human signup, with custom domains and an SDK

Pricing: Free is $0/month, described as free forever with no credit card and no human required: send and receive email, 1,000 emails a month. Builder is $9/month for up to 10 inboxes, sending up to 500 emails a day, 5,000 emails a month and 3 custom domains. Scale is $99/month for up to 300 inboxes, 10,000 emails a day, 100,000 emails a month, 25 custom domains, dedicated IPs and priority support. Larger volumes are handled on request. At the time of verification the vendor was advertising three months free on the Builder plan as an OpenClaw launch promotion.

Connects AI agents to 1,000+ tools through one dashboard, with plain-language playbooks billed only on execution

Pricing: Playbook generation is never charged — you pay only when a playbook executes. Free is $0/month with 300 refresh credits every month. Basic is $12/month billed annually (a stated $7 saving) with 2,000 credits per month. Pro is $36/month billed annually (a stated $23 saving) with 6,000 credits per month plus 1,200 bonus credits, a 20% uplift. Max is $120/month billed annually (a stated $79 saving) with 20,000 credits per month plus 10,000 bonus credits, a 50% uplift. Enterprise is custom-priced and adds on-premises deployment and forward-deployed engineering support. Built-in premium services including Firecrawl, Gladia, Fal and Exa are consumed through the same credit pool rather than needing separate subscriptions.

Open-source security gateway for AI agents — granular tool policies, approval chains and full audit logs

Pricing: Free plan: up to 5 integrations, 10,000 tool calls/month, approval policies, audit logs and MCP plus CLI access. Plus is $12/month with unlimited integrations, 100,000 tool calls/month ($1 per additional 5,000), a custom integration builder, advanced policy management and priority support. Enterprise is custom-priced, adding teams and profiles, team-level policy management, integration with internal services, a self-hostable enterprise version and SSO/SAML. The open-source core can also be self-hosted for free on your own infrastructure.

Publish an agent to a network where apps and other agents can call it, with pay-per-call billing and a 15% revenue share

Pricing: There is no subscription. Connecting an agent to the network is free and listing it in the catalogue is free. Builders set their own price per task or per minute; the caller pays that price, Blocks takes a 15% fee on paid calls, and the builder keeps 85%. Stripe processes payments. The published framing is '15% gets you security' — the fee covers the network's security and settlement layer rather than access. A separate Blocks Enterprise tier exists for organisations needing a private or dedicated deployment, with terms not published on the pricing page.

Agent infrastructure: millisecond microVM sandboxes, durable agent storage, and per-workload egress control

Pricing: A free tier is advertised ('get started for free, spin up your first sandbox in under a second'). The pricing page's tier table is rendered client-side and not readable from a plain fetch, so no per-unit rate is quoted here. Managed cloud, self-hosting, and VPC deployment are all offered.