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NYLAS VS AGENTMAIL · UPDATED OCTOBER 2026
Nylas vs AgentMail: the best AgentMail alternative for AI agent email and calendar in 2026
Nylas Agent Accounts and AgentMail both give an AI agent its own inbox through an API. Nylas adds a generally available calendar, Scheduler booking pages, and the same API used for connected Gmail and Outlook accounts. AgentMail’s calendar is in beta, and it adds WebSockets and a wider list of documented agent integrations.
A generally available calendar on every Agent Account, with Scheduler booking pages
SOC 2 Type II, ISO 27001 and ISO 27701, with a pre-signed HIPAA BAA on paid plans
200 emails per day per account on the free plan; no daily cap on paid plans
The same API reaches your users’ own Gmail and Outlook accounts
Why teams look for an AgentMail alternative
Teams usually look beyond AgentMail for three reasons: calendar maturity, compliance coverage and daily send limits.
Calendar is still in beta
AgentMail’s docs say calendar is in AgentMail Labs. An organization admin turns it on, and it runs in US production only, not yet in EU production. Every Nylas Agent Account ships with a primary calendar that sends invitations and records RSVPs, and Scheduler works with Agent Accounts. Sources: docs.agentmail.to/calendar, Nylas Agent Account calendars docs
Compliance coverage
AgentMail says it completed its first SOC 2 Type II audit in 2025 and that its 2026 audit is underway with A-LIGN. Its SOC 2, pricing and enterprise pages list no ISO certification or HIPAA support. Nylas holds SOC 2 Type II, ISO 27001 and ISO 27701, and offers a pre-signed HIPAA BAA on all paid plans, on request. Sources: agentmail.to/legal/soc2, nylas.com/security
Daily send limits on paid plans
AgentMail’s pricing lists 1,000 emails per day on Developer and 15,000 per day on Startup. Nylas Essentials, Pro and Enterprise set no per-account daily send cap. Sources: agentmail.to/pricing, Nylas Agent Account limits docs
Nylas vs AgentMail — feature comparison
Core capabilities
| Capability | Nylas | AgentMail |
|---|---|---|
| Agent-owned inbox | Agent Accounts on every plan; 3 on Free | Inboxes on every plan; 3 on Free |
| Calendar | Generally available: primary and extra calendars, invitations, RSVPs and free/busy | Beta in AgentMail Labs: events, recurring events, invitations, RSVPs, start and end webhooks; US only, not yet EU |
| Booking pages | Scheduler supports Agent Accounts, with all four meeting types on the primary calendar | Not in AgentMail’s docs |
| Search | Relevance-ranked full-text search across subject, participants, body and attachment filenames | Relevance-ranked full-text search; semantic search through your own vector store |
| Reply extraction | Clean, display-ready content for up to 20 messages per call | Reply text extracted on every message; attachment text for PDF, Word, Excel and text files |
| Routing and labels | Rules route, archive, block or mark spam; typed lists | Manual labels; auto-labeling listed as coming soon |
| Send and receive controls | Inbound and outbound rules with a rule audit log, on Essentials and above | Allow and block lists for send, receive and reply; API key permissions |
| Connected user mailboxes | Gmail, Microsoft 365, Yahoo, iCloud, IMAP and Exchange on the same API | Not offered; a Google Workspace guide routes unmatched addresses on your domain to AgentMail inboxes |
Developer experience
| Feature | Nylas | AgentMail |
|---|---|---|
| SDKs | Node.js, Python, Ruby, Kotlin/Java | Python and TypeScript/Node.js |
| MCP server | Hosted at mcp.us.nylas.com and mcp.eu.nylas.com; 38 tools across email, calendar, contacts and Notetaker, with a send confirmation step | Hosted at mcp.agentmail.to/mcp; 37 tools, plus 2 organization tools for OAuth sessions |
| Agent integrations | CLI with one-command MCP install for Claude Code, Cursor, Windsurf, VS Code and Codex | Docs cover Google ADK, LangChain, OpenClaw, Grok, Replit, Vercel, LiveKit and Sim.ai, plus a CLI |
| Real-time events | Webhooks for messages, threads, drafts, folders, events, deliverability and account lifecycle | Webhooks and WebSockets; calendar start and end webhooks |
| Provisioning | One API call, the CLI or the Dashboard; needs a registered domain or a Nylas trial domain | Create an inbox by API in seconds |
| Free plan | 3 accounts, 3,000 emails a month, 3 GB, 200 emails a day per account; 30-day inbox retention | 3 inboxes, 3,000 emails a month, 3 GB, 100 emails a day |
| Mail clients | IMAP and SMTP access, on Essentials and above | IMAP and SMTP guide in docs |
Security and compliance
| Feature | Nylas | AgentMail |
|---|---|---|
| SOC 2 Type II | Report under NDA through the Trust Center | First audit completed in 2025; 2026 audit underway with A-LIGN |
| ISO certifications | ISO 27001 and ISO 27701 | Not listed |
| HIPAA | HIPAA report under NDA; pre-signed BAA on all paid plans, on request; custom BAA on Enterprise | Not listed |
| Data residency | US (Iowa) or Europe (London) on every plan | EU region on Enterprise only; calendar not yet in EU |
| Enterprise deployment | Guaranteed uptime SLA, custom BAA terms, app-level field filtering and volume pricing; static IP routing from Essentials | OIDC/SAML SSO, bring-your-own-cloud deployment, dedicated IPs and white-label |
| Message expiry | Retention periods set by policy on paid plans | Optional 24-hour message expiry (early access) |
AgentMail alternative for connected accounts
Agent inboxes and your users’ mailboxes on one API
AgentMail gives agents their own inboxes. Nylas does too, and the same API connects your users’ own Gmail, Outlook and other accounts, so an agent can work from its own address and from the mailboxes it’s been given access to.
- Agent Accounts on your domain Create an inbox and calendar for an agent with one API call, the CLI or the Dashboard.
- Connected user mailboxes Reach users’ Gmail, Microsoft 365, Yahoo, iCloud, IMAP and Exchange accounts through the same integration.
- One grant model Agent Accounts and connected accounts are both grants, so the same calls work on either.
- One vendor to review Add agent inboxes on the platform and pricing page you already use, with no second security review.
Real-time webhooks
Webhooks for every message, event and booking
One webhook subscription covers every Agent Account and connected account, so your agent reacts to new mail, calendar changes and bookings without polling.
Signed notifications
Every webhook is signed with HMAC-SHA256 so you can confirm it came from Nylas.
Data in the payload
Notifications include the changed object, so most changes need no follow-up API call.
One subscription for every account
A single endpoint receives changes from agent inboxes and connected accounts alike.
Configurable triggers
Subscribe only to the message, folder, event, booking and deliverability changes your agent needs.
<142ms
P95 Webhook Delivery Latency
3
Delivery attempts on temporary errors
POST https://your-app.com/webhooks/nylas
// Header: X-Nylas-Signature: hmac_sha256=a3f8c2d1e9...
{
"specversion": "1.0",
"type": "event.created",
"source": "/nylas/calendar/events",
"id": "notif_9k3mZx8vL2",
"time": 1718304000,
"retry_config": {
"attempt": 1,
"max_retries": 3,
"backoff": "exponential"
},
"data": {
"object": "event",
"id": "evt_abc123def456",
"calendar_id": "cal_primary_9x2k",
"grant_id": "grant_8f2a4b6c",
"title": "Q3 Architecture Review",
"status": "confirmed",
"provider": "microsoft_office_365",
"when": {
"start_time": 1718304000,
"end_time": 1718307600,
"timezone": "America/New_York"
},
"participants": [
{ "email": "eng@acme.com", "status": "yes" },
{ "email": "pm@acme.com", "status": "maybe" }
],
"nylas_normalized": true
}
}What Nylas covers that AgentMail doesn’t
Three capabilities have no generally available equivalent on the AgentMail side.
Calendar and Scheduler, available now
Agent Account calendars are generally available, send invitations, record RSVPs and answer free/busy queries. Scheduler booking pages run on an Agent Account’s primary calendar, with all four meeting types including round-robin.
Rules and an audit trail
Outbound rules can block a send before it leaves Nylas, so a blocked message is never delivered. A rule audit log records each evaluation, including which rules matched and what actions ran. Included on Essentials and above.
Connected accounts
The same API that runs your agents’ inboxes reaches your users’ own Gmail and Outlook accounts. AgentMail gives agents their own inboxes only.
Pricing comparison
Both price by agent inbox and monthly email volume, and both offer a free plan.
| Dimension | Nylas | AgentMail |
|---|---|---|
| Free | $0: 3 agent accounts, 3,000 emails a month, 3 GB | $0: 3 inboxes, 3,000 emails a month, 3 GB |
| Entry plan | Essentials, $15/month: 10 agent accounts, 10,000 emails a month, 1 custom domain | Developer, $20/month: 10 inboxes, 10,000 emails a month, 10 custom domains |
| Scale plan | Pro, $49/month ($43 billed annually): 50 agent accounts, 50,000 emails a month, 10 custom domains (20 with annual billing) | Startup, $200/month: 150 inboxes, 150 custom domains, 15,000 emails a day |
| Extra usage | Pro: $0.40 per account ($0.20 annual); from $0.80 per 1,000 emails ($0.70 annual). Free and Essentials stop at their limits | $2/month per extra inbox or domain; $2/month per 1,000 emails; 20% off with annual billing |
| Daily send cap | Free: 200 per account. Paid plans: none | Free: 100. Developer: 1,000. Startup: 15,000 |
| Also included | Calendar, Scheduler and connected accounts on every plan | Email; calendar in beta |
Both pricing pages checked October 14, 2026.
Worked example
A team running 50 agent inboxes and sending 20,000 emails a month pays $49 a month on Nylas Pro ($43 billed annually), which includes 50 accounts and 50,000 emails. On AgentMail’s published add-on rates, the same team pays about $120 a month: Developer at $20, 40 extra inboxes at $2 each, and 10,000 extra emails at $2 per 1,000. AgentMail’s Startup plan, at $200 a month, also covers it.
At 10 inboxes, Nylas Essentials ($15) costs less than AgentMail Developer ($20).
Agent inboxes and connected accounts
Both give agents their own inboxes. Nylas also connects the mailboxes your users already have.
Agent-owned inbox
Nylas: Agent Account on your domain
AgentMail: Inbox on agentmail.to or your domain
Agent calendar
Nylas: Generally available
AgentMail: Beta in AgentMail Labs, US only
Gmail and Google Workspace
Nylas: Connect users’ own accounts
AgentMail: Not offered
Microsoft 365 and Outlook
Nylas: Connect users’ own accounts
AgentMail: Not offered
Yahoo
Nylas: Connect users’ own accounts
AgentMail: Not offered
iCloud
Nylas: Connect users’ own accounts
AgentMail: Not offered
Agents with their own inbox, already in production
250,000+ developers trust Nylas to power email and calendar experiences their customers love.
Dana gives every user’s AI assistant its own inbox with a single API call
1 API call
inbox and calendar per user
Zero
Workspace tenants required
“I wanted inbound email for Dana. We’ve now got it all set up… The real meat of it is taking the email in, doing an LLM turn, and responding to whatever the instruction is in the email.”
Wealthie built an AI agent inbox in under a day
1 day
build to production
4x
clients per adviser
“It was so bloody easy. It took me a day with Claude Code and how good Nylas is to work with. It literally took me less than a day.”
One builder is replacing 20+ SaaS tools for a 50-person business
20+
SaaS tools replaced
5 → 1
vendor relationships
“My default mode is scope it, hand it to AI, and ship it by tonight. Nylas lets me do that.”
Security and compliance
Nylas security and compliance
Security is built into the core of every Nylas product. Nylas holds a SOC 2 Type II report and ISO 27001 and ISO 27701 certifications and supports GDPR and CCPA, so your users’ calendar data stays safe, secure, and protected.
99.99%
API success rate
SOC 2
Type II audited
34.5B
API Transactions
HIPAA
BAA on all paid plans
Frequently asked questions
Need more help?
Let’s talk!
Choose Nylas if your agent needs a calendar, Scheduler booking pages, access to users’ own mailboxes, or ISO and HIPAA coverage. Choose AgentMail if your agent only needs email and you want WebSockets or its documented agent integrations.
Yes, in beta. As of October 2026, AgentMail’s docs say calendar is in AgentMail Labs, runs in US production only, and must be turned on by an organization admin. Nylas Agent Account calendars are generally available.
Yes. A Nylas Agent Account sends and receives email and has a generally available calendar that sends invitations, records RSVPs and works with Scheduler booking pages. AgentMail’s calendar is in beta in AgentMail Labs, in US production only.
AgentMail says it completed its first SOC 2 Type II audit in 2025 and that its 2026 audit is underway with A-LIGN. Its SOC 2, pricing and enterprise pages list no HIPAA support or BAA, so confirm with AgentMail before sending health data. Nylas holds SOC 2 Type II, ISO 27001 and ISO 27701, provides a HIPAA report under NDA, and offers a pre-signed HIPAA BAA on all paid plans, on request.
Both start free with 3 inboxes and 3,000 emails per month. Nylas Free allows 200 emails per day per account, and AgentMail Free allows 100. Nylas Essentials is $15 a month for 10 agent accounts, AgentMail Developer is $20 for 10 inboxes, and Nylas Pro is $49 a month for 50 accounts. Pricing checked October 14, 2026.
Both offer relevance-ranked full-text search. Nylas Agent Account search covers subject, participants, body and attachment filenames, but not attachment contents. AgentMail’s docs say semantic search needs your own vector store.
AgentMail and Nylas Agent Accounts give an agent its own inbox through an API, with no user’s Google account involved. The Gmail API works inside an existing Google account. Nylas can also connect a user’s Gmail account through the same API, so one integration covers both.
Nylas offers US (Iowa) and Europe (London) regions on every plan. AgentMail offers an EU region on Enterprise, and its calendar is not yet in EU production.
When your agent only needs email and you want WebSockets or AgentMail’s documented integrations for tools like Replit, Vercel, Grok and Google ADK. Enterprise buyers can also ask for SSO, bring-your-own-cloud deployment, dedicated IPs and 24-hour message expiry.
Yes. Create Agent Accounts on a domain you control, move DNS for any custom domain, and rewrite your calls against the Nylas API. Labels map to folders and rules, and webhooks map to Nylas notifications. Export any message history you want to keep before you switch.
Conclusion
Nylas and AgentMail both give an agent a real inbox with full-text search and reply extraction. Nylas adds a generally available calendar, Scheduler booking pages, connected user accounts and broader certifications. AgentMail adds WebSockets, more documented integrations and Enterprise deployment options.
Choose Nylas if your agent schedules meetings, works with users’ own mailboxes, or needs ISO 27001, ISO 27701 or a HIPAA BAA, or if you already build on Nylas.
Choose AgentMail if your agent only needs email, you want WebSockets, or you work in an agent stack AgentMail documents, such as Replit, Vercel or Grok.