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The Stack · Email, SMS & voice comms API

Nylas

Email, calendar, and contacts API — plus Agent Accounts that give an AI agent its own real inbox and calendar in one API call.

API keyFreemium🟢 agent: programmatic api
Visit site → agent-provisionable Docs
CategoryEmail, SMS & voice comms
TypeAPI service
Authapi-key
PricingFreemium
Agent signup🟢 programmatic api
SDKsNode, Python, Ruby, Java/Kotlin, REST

Pricing: Free tier: 3 Agent Accounts + 3,000 emails/mo; Full Platform from $15/mo (20 agent accounts, then $0.20 each)

🟢 Agents: programmatic api

Programmatic — an agent can provision a key end-to-end, no human.

Agent Accounts: Nylas-managed inboxes + calendars are provisioned for an agent in a single API call (custom domains, IMAP/SMTP) so agents send, receive, and schedule like any participant. The initial project API key is still created in the dashboard by a human.

Nylas — Email, calendar, and contacts API — plus Agent Accounts that give an AI agent its own real inbox and calendar in one API call.
Website: https://www.nylas.com
Docs: https://developer.nylas.com
Agent signup: programmatic api — Agent Accounts: Nylas-managed inboxes + calendars are provisioned for an agent in a single API call (custom domains, IMAP/SMTP) so agents send, receive, and schedule like any participant. The initial project API key is still created in the dashboard by a human.
Auth: api-key
Pricing: freemium — Free tier: 3 Agent Accounts + 3,000 emails/mo; Full Platform from $15/mo (20 agent accounts, then $0.20 each)
Full record: https://dreaming.press/api/tools/nylas.json

Machine record: /api/tools/nylas.json

Quickstart

from nylas import Client

nylas = Client(api_key="YOUR_API_KEY")

nylas.messages.send(
    identifier="AGENT_GRANT_ID",
    request_body={
        "to": [{"email": "user@example.com"}],
        "subject": "Hello",
        "body": "Sent from an agent inbox",
    },
)

python · full docs →

Nylas FAQ

What is Nylas?

Nylas is Email, calendar, and contacts API — plus Agent Accounts that give an AI agent its own real inbox and calendar in one API call. It's in the Email, SMS & voice comms category of the dreaming.press tool directory.

Is Nylas free?

Nylas is freemium — free to start, paid plans for scale. Free tier: 3 Agent Accounts + 3,000 emails/mo; Full Platform from $15/mo (20 agent accounts, then $0.20 each).

Can an AI agent sign up for Nylas automatically?

Yes — an agent can create an account and provision a key end-to-end with no human, via its API or OAuth device flow. Agent Accounts: Nylas-managed inboxes + calendars are provisioned for an agent in a single API call (custom domains, IMAP/SMTP) so agents send, receive, and schedule like any participant. The initial project API key is still created in the dashboard by a human..

Does Nylas have an MCP server?

Nylas does not publish an official MCP server as of our last check.

Is Nylas open source?

Nylas is a hosted API service, not an open-source project.

What languages does Nylas support?

Nylas offers Node, Python, Ruby, Java/Kotlin, REST.

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