Instantly MCP server compared with the Outreach2day MCP server

Instantly's MCP server puts its sequencer, lead tools and inbox in your assistant. Ours covers domains, mailboxes, warm-up and campaigns, and can export warm mailboxes into your Instantly workspace.

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Warm-up and sending included
$2.50 a mailbox, 12 minimum
Month-to-month billing

Main job of each server

Instantly MCP: You already send from Instantly and want the assistant to run campaigns, leads and the inbox there
Outreach2day MCP: You need domains and mailboxes set up from the chat, priced per mailbox, paid on Stripe

What the Instantly MCP server does

Instantly runs a hosted MCP server at mcp.instantly.ai that exposes its V2 API: campaigns, leads, sending accounts, emails including replies, analytics and webhooks, with an Instantly API key. The Outreach2day MCP server buys and sets up domains and mailboxes, warms them up and runs campaigns, with OAuth sign-in. The two connect: our export_mailboxes_to_sequencer sends warm mailboxes to Instantly.

Instantly MCP at a glance

From Instantly's own pages; each line links its source.

Endpoint: https://mcp.instantly.ai/mcp, Streamable HTTP, hosted by Instantly source (opens the vendor's page in a new tab)
Sign-in: Instantly API v2 key: Authorization header (recommended), x-instantly-api-key header, or in the URL path (legacy) source (opens the vendor's page in a new tab)
Price: Free with an Instantly subscription, per the help center source (opens the vendor's page in a new tab)
Clients named: Claude Desktop, Cursor, n8n and any client with Streamable HTTP source (opens the vendor's page in a new tab)
Tool count: The help center lists 31 tools in 5 groups; the developer docs describe the full V2 API as tools source (opens the vendor's page in a new tab)
Rate limits: API limits apply: 100 requests a second and 6,000 a minute per workspace source (opens the vendor's page in a new tab)

Capabilities side by side

What each server's tools cover, job by job. Our column links the page with the tool list.

Instantly MCP server and Outreach2day MCP server, capability by capability
Job	Instantly MCP	Outreach2day MCP
Buy domains	Buy domainsPartly, or at extra costDone-for-you order endpoints (check domains, place order) are in the V2 API; the MCP tools page does not list them source (opens the vendor's page in a new tab)	Buy domainsIncludedcheck_domains, then a server-priced quote and a Stripe link you pay; domains you own connect free details
Mailboxes	MailboxesIncludedAdd and manage sending accounts; the V2 API also connects Google and Microsoft accounts through OAuth source (opens the vendor's page in a new tab)	MailboxesIncludedCreated on your domains after payment, SMTP/IMAP, SPF, DKIM and DMARC set; no Google or Microsoft option details
Warm-up	Warm-upIncludedWarm-up settings per account and warm-up metrics source (opens the vendor's page in a new tab)	Warm-upIncludedstart_warmup and get_warmup_status: inbox rate, spam rate and ready date per mailbox details
Campaigns	CampaignsIncludedCreate, activate, pause, subsequences and bulk operations source (opens the vendor's page in a new tab)	CampaignsIncludedDraft, steps, CSV import, preflight, launch after your yes, pause details
Leads	LeadsIncludedLeads, lists, labels, bulk import; lead search endpoints are in the V2 API source (opens the vendor's page in a new tab)	LeadsNot includedNo lead search or enrichment; contacts come from your CSV, up to 10,000 rows per import details
Replies	RepliesIncludedRead, reply, forward and verify emails source (opens the vendor's page in a new tab)	RepliesPartly, or at extra costReads replies with intent and campaign; no tool sends a reply details
Analytics	AnalyticsIncludedCampaign performance, inbox placement and warm-up metrics source (opens the vendor's page in a new tab)	AnalyticsPartly, or at extra costSent, replies and bounces per campaign; warm-up inbox and spam rate per mailbox details
Sign-in	Sign-inIncludedAPI key in a header or the URL source (opens the vendor's page in a new tab)	Sign-inIncludedOAuth sign-in in the client, Streamable HTTP; API key only for CI and headless setups details
Price of the server	Price of the serverIncludedFree with an Instantly subscription source (opens the vendor's page in a new tab)	Price of the serverIncludedIncluded with the account; $2.50 per mailbox a month, 12 minimum details

Instantly facts checked on 8 October 2026 against the linked pages. Where those pages say nothing, the cell says so.

Where each one fits

Instantly MCP fits when

You already send from Instantly and want the assistant to run campaigns, leads and the inbox there
You want the assistant to answer replies
You buy Google or Microsoft accounts through Instantly

Outreach2day MCP fits when

You need domains and mailboxes set up from the chat, priced per mailbox, paid on Stripe
You want warm-up status per mailbox before you send
You want one server from the first domain to the campaign stats, with OAuth sign-in

Using Instantly MCP and Outreach2day MCP together

Connect both servers to the same assistant. Ask ours to buy domains and mailboxes and run warm-up; after 14 days ask it to export the warm mailboxes to Instantly. The export sends their SMTP/IMAP logins to the Instantly workspace you connected in Outreach2day, after you confirm.

Then switch to Instantly's tools in the same chat: create the campaign, add leads and read replies there. Exporting mailboxes to Instantly or Smartlead has the details.

The Outreach2day MCP server, job by job

Tools, an example session, prompts per assistant and the limits for each job.

Questions

Does Instantly have an official MCP server?

Yes. It is hosted at https://mcp.instantly.ai/mcp and authenticates with an Instantly API v2 key. The help center says it is free with an Instantly subscription.

Can the Instantly MCP server buy domains and mailboxes?

Instantly's V2 API has done-for-you order endpoints, and the developer docs say the MCP server exposes the full API. The MCP tools page does not list them, so check your client's tool list. The Outreach2day server quotes domains and mailboxes and returns a Stripe link.

Can I use Outreach2day mailboxes in Instantly from the assistant?

Yes. Connect your Instantly account in Outreach2day once; then the assistant lists it with list_sequencers and exports warm mailboxes with export_mailboxes_to_sequencer after you confirm.

Which one answers replies?

Instantly's server has a reply tool. Ours reads replies with their intent and campaign and leaves the answer to you.

More comparisons

Deliverability call

Talk to our deliverability team

Book a call with the people who run our mailbox infrastructure. We look at your current setup and tell you what to change.

Review your domains, DNS records and current inbox placement
Size the setup: domains, mailboxes per domain and daily volume per mailbox
Plan warm-up and the move from your current provider or sequencer

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Sources

Instantly pages checked on 8 October 2026. Our tools: the Outreach2day MCP server and its public README.

First cold emails on day 14, full volume on day 21

Add domains, create mailboxes and turn on warm-up. You see every mailbox's warm-up numbers from day one.

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Create mailboxes$2.50 a mailbox, all in