Frequently Asked Questions

Dead Simple Email (DSE) is an email API and dashboard built for AI agents. It lets software programs send and receive email through dedicated inboxes, managed via API or dashboard. It is not a marketing platform, a Gmail replacement, or an AI product itself — it's infrastructure for AI agents that need email.

Developers and teams building AI agents that send or receive email. This includes AI sales agents, AI support agents, AI scheduling assistants, AI recruiters, and any other autonomous software that needs a real email inbox. It is also used by AI development agencies building agents for clients.

DSE is not a cold email tool, a marketing email platform, or a replacement for human email. It does not replace Gmail for people. It gives email addresses to software.

At deadsimple.email. The free plan gives you 5 inboxes and 5,000 emails/month with no credit card required.

Yes. DSE has a native MCP server. Any AI agent built with Claude, ChatGPT, LangChain, CrewAI, AutoGen, OpenClaw, or any other MCP-compatible framework can connect to DSE email without writing custom integration code. This is one of the main differences between DSE and other email APIs.

Yes. Connect DSE via the MCP server or use the REST API directly. LangChain agents can send email, receive email, and trigger actions on incoming messages.

Yes. CrewAI agents can connect to DSE via MCP natively, or via the API. DSE works as a tool within any CrewAI crew that needs email capability.

Yes. AutoGen agents connect to DSE via MCP or the REST API.

Yes. DSE's MCP server is compatible with OpenClaw. Agents built on OpenClaw can send and receive email through DSE without custom code.

Yes, on all plans including the free tier. Webhooks let your agent receive a real-time notification the second a new email arrives, instead of polling the API. Every inbox can have its own webhook URL.

Yes. Inboxes are created via the API with a single POST request. You can create, list, and delete inboxes without using the dashboard. It's one API call per inbox with no manual setup required.

Yes. You can use your own domain (e.g., agent@yourcompany.com) by adding a DNS record. Inboxes on the default DSE domain are available immediately with no DNS setup required.

Yes. Every DSE inbox supports full send and receive. Your agent can send outbound emails and read incoming replies — the full message body, subject, sender, and attachments.

Yes. DSE includes a visual dashboard for managing inboxes, monitoring activity, and debugging. This is one of the biggest differences from AgentMail, which is API-only.

No credit card is required for the free plan.

No. The free plan is permanent. 5 inboxes and 5,000 emails/month, forever, no credit card required.

AgentMail's pricing jumps from $20/mo (10 inboxes) straight to $200/mo (150 inboxes) with nothing in between. DSE offers $5/mo for 15 inboxes, $29/mo for 100 inboxes, and $99/mo for 500 inboxes. At the mid tier, DSE is 86% cheaper per inbox. See full comparison →

Google Workspace charges $7–8 per inbox per month. 50 agent inboxes would cost $350–400/month. DSE's Pro plan gives you 100 inboxes for $29/month. Gmail also violates its TOS when used by bots and will suspend automated accounts.

Contact us for annual pricing options.

You can upgrade your plan at any time from the dashboard. Contact us if you need to discuss a custom arrangement before upgrading.

Three main differences: price, dashboard, and MCP support.

Price: DSE is significantly cheaper at every tier above free. AgentMail has a $20 to $200 pricing cliff with no middle option. DSE fills that gap with $5/mo and $29/mo plans.

Dashboard: AgentMail is API-only. DSE includes a visual dashboard for inbox management.

MCP: DSE has a native MCP server. AgentMail does not. If you're building with any MCP-compatible framework, DSE connects with zero custom code.

AgentMail's advantages: SOC 2 certification, dedicated IPs, semantic search, and structured data extraction. See full comparison →

SendGrid is an outbound-only email platform for marketing and transactional emails. It cannot receive email, has no concept of inboxes, and is not designed for agents. DSE supports full send and receive with programmatic inbox creation and webhooks. See all comparisons →

AWS SES is low-level sending infrastructure. Receiving email with SES requires building your own pipeline with S3 and Lambda. There are no inboxes, no dashboard, and no programmatic inbox management. DSE provides all of this out of the box.

Gmail's Terms of Service prohibit automated or bot access. Accounts used programmatically are suspended without warning, often within 1–2 days. Gmail also has no programmatic inbox creation, requires complex OAuth that needs human re-authentication, and costs $7–8/inbox/month at scale. Read the full breakdown →

The DSE API is a standard REST API. It works with any language that can make HTTP requests — Python, Node.js, Go, Ruby, PHP, Java, and others. SDKs are available for the most common languages.

API key authentication via the Authorization: Bearer header. Keys are generated in the dashboard under Settings → API Keys. All keys are prefixed with dse_.

Rate limits vary by plan. Contact us if you have high-throughput requirements.

Yes. This is a common use case. Agencies and SaaS products use one DSE account to manage inboxes across multiple clients or customers, creating and deleting inboxes programmatically as needed.

DSE is built on production mail server infrastructure with proper SPF, DKIM, and DMARC configuration. Deliverability depends on your sending domain, content, and volume — the same factors that affect any email system. Using a custom domain with proper DNS records improves deliverability significantly.

Yes. Adding your own domain with proper DNS records (SPF, DKIM) is the recommended setup for production use and gives you the best deliverability.

Not currently. If dedicated IP isolation is a hard requirement, AgentMail offers this on higher tiers.

Email support is available on all paid plans at hello@deadsimple.email. Check the documentation for API references, quickstarts, and integration guides.

Yes. Full API documentation, quickstart guides, and MCP integration instructions are available.