Looking for a Nylas alternative for AI agents?
Nylas Agent Accounts give each AI agent its own email and calendar identity, but no arbitration between agents: when two agents book the same slot, both writes succeed. If your agents collide on a shared calendar, the missing piece is a coordination layer — priority-ranked conditional writes, holds with TTL, and an audit trail — which is what AgentDraft provides, either instead of Nylas or on top of it.
Updated
Credit where due: Nylas is the broadest unified email, calendar, and contacts API on the market, with excellent provider coverage across Google, Microsoft, and the long tail. Agent Accounts (launched June 2026) extend that surface to agents — each agent gets a real email address and a real calendar, with a free tier of 3 agents and roughly $0.20 per agent above the $15/mo base. If your problem is "my agent needs an inbox and a calendar that actually sync with the providers my customers use," Nylas solves that problem well.
For a single-writer application — one agent, or one backend, doing all the scheduling — that surface is arguably all you need. The head-to-head detail is in AgentDraft vs. Nylas.
Agent Accounts are an identity product, not a coordination product. Nylas gives each agent its own credentials; it does not decide between agents. There is no conflict prevention, no priority model, and no audit trail of which agent did what.
The concrete failure mode is the check-then-book race. Agent A reads availability, sees 3pm free. Agent B reads availability, sees 3pm free. Both call create-event; both succeed; the calendar is double-booked. No amount of availability-checking fixes this, because the check and the write are separate operations — the race lives in the gap between them. AgentDraft closes that gap with a storage-level conditional write: one row per time bucket in a single DynamoDB transaction, so the check is the write. In the open collision benchmark, the rank-1 agent won 100.0% of races at p99 112 ms across 500 concurrent attempts, with 0 double-commits.
| Capability | AgentDraft | Nylas Agent Accounts |
|---|---|---|
| Per-agent email inbox | Yes — one inbox per agent, behind the same API | Yes — each agent gets an email identity |
| Conflict-free calendar writes | Yes — storage-level conditional write; the check is the write | No — writes are provider CRUD; concurrent bookings both succeed |
| Agent priority + bump window | Yes — agent_priority ranking, 30 s default bump window | No — no arbitration between agents |
| Holds with TTL | Yes — 30 s default, tunable | Not advertised at time of review |
| Append-only audit trail | Yes — holds, commits, evictions, mail, rules | No audit trail of agent actions |
| Typed 409 on lost races | Yes — HTTP 409 outranked, typed in both SDKs | N/A — both writes succeed, so there is no losing response |
| Entry price | Free — 1 agent, 1 mailbox, 50 bookings/mo, no card | Free tier (3 agents); $15/mo then ~$0.20/agent |
Nylas rows reflect the public product surface at nylas.com, checked 2026-07-01. If we've mis-stated a feature, tell us and we'll correct it.
Choose Nylas if you need deep multi-provider email, calendar, and contacts data sync for a single-writer application, or provider coverage that goes well beyond scheduling. It is the broadest unified communications API available, and if only one process writes to each calendar, the race AgentDraft exists to resolve never happens in your stack. In that case Nylas is the simpler, better-fitting choice — adding a coordination layer you don't need is just latency.
Choose AgentDraft when more than one agent — yours, your vendor's, your prospect's auto-responder — will write to the same calendar, and "who wins" needs a deterministic answer. The product is the coordination layer: priority-ranked conditional writes, a 30-second bump window, holds with TTL, typed 409s on lost races, per-agent inboxes, and an append-only audit log, priced from a free Developer tier ($10/mo Individual, $25/mo Team above it). The two aren't mutually exclusive: keep Nylas as your provider adapter and add AgentDraft as the coordination layer above it — AgentDraft decides the winner, the winning write flows down to Nylas. Terms like bump window and hold are defined in the glossary.
Frequently asked
Is AgentDraft a drop-in replacement for Nylas?
No. Nylas is a unified provider API for email, calendar, and contacts across many providers; AgentDraft is a coordination layer that arbitrates writes between agents. If you switch because you need arbitration, you gain the conflict engine and give up Nylas's provider breadth. Most multi-agent stacks keep a provider adapter and add AgentDraft above it rather than swapping one for the other.
Do Nylas Agent Accounts prevent double-booking between agents?
No. Agent Accounts give each agent an email and calendar identity, but there is no conflict prevention or priority coordination between agents. Two agents that check availability and then book the same slot will both succeed — the check-then-book race resolves at the calendar provider, which accepts both writes.
Can I keep Nylas and add AgentDraft on top?
Yes, and it's the pattern we recommend when you already run Nylas. Agents commit through AgentDraft, which decides the winner with a priority-ranked conditional write; the winning write then flows down to Nylas as a normal create-event. They don't overlap on writes if AgentDraft owns the commit decision.
How does pricing compare for a small agent fleet?
Nylas Agent Accounts have a free tier of 3 agents, then $15/mo plus roughly $0.20 per agent. AgentDraft has a free Developer tier (1 agent, 1 mailbox, 50 bookings a month, no card), a $10/mo Individual tier for up to 3 agents, and a $25/mo Team tier with shared priority resolution. At small fleet sizes the totals are comparable — the difference is what you're paying for: provider sync at Nylas, write arbitration at AgentDraft.
- AgentDraft vs. Nylas — the head-to-head comparison, feature by feature.
- The AgentDraft collision benchmark — the 500-attempt receipts behind the race claims.
- AgentDraft pricing — free Developer, $10/mo Individual, $25/mo Team.
- Glossary — bump window, hold TTL, and the rest of the coordination vocabulary.