Smartlead MCP server compared with the Outreach2day MCP server
Smartlead's MCP server reads campaign insights and runs deliverability diagnostics on your Smartlead account. Ours sets up domains, mailboxes and warm-up, runs campaigns, and can export warm mailboxes into Smartlead.
- Warm-up and sending included
- $2.50 a mailbox, 12 minimum
- Month-to-month billing
Main job of each server
- Smartlead MCP
- You send from Smartlead and want the assistant to read campaign data and diagnose deliverability there
- Outreach2day MCP
- You need domains and mailboxes bought and set up from the chat
What the Smartlead MCP server does
Smartlead's MCP server connects over SSE with an API key in the URL; the help center lists Claude Desktop as the supported client and describes campaign insights, deliverability diagnostics and lead, account and performance data. The Outreach2day MCP server buys and sets up domains and mailboxes, warms them and runs campaigns, and its export tool sends warm mailboxes to Smartlead.
Smartlead MCP at a glance
From Smartlead's own pages; each line links its source.
- Endpoint
- https://mcp.smartlead.ai/sse with the API key as a URL parameter, run through npx (Node.js required) source (opens the vendor's page in a new tab)
- Transport
- SSE only for now, per the help center source (opens the vendor's page in a new tab)
- Sign-in
- Smartlead API key from Settings, API Keys source (opens the vendor's page in a new tab)
- Clients named
- Claude Desktop in the help center; the blog says any MCP client source (opens the vendor's page in a new tab)
- Tool count
- 116+ tools in six groups, per Smartlead's blog; the help center gives no count source (opens the vendor's page in a new tab)
- Price
- No MCP price or plan on the pages we read 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.
| Job | Smartlead MCP | Outreach2day MCP |
|---|---|---|
| Buy domains | Buy domainsNot includedNot in Smartlead's MCP pages 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 | MailboxesPartly, or at extra costEmail account management and mailbox health, per the blog 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-upPartly, or at extra costReads warm-up status and metrics, per the blog 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 | CampaignsPartly, or at extra costCampaign insights; the blog adds pausing sequences and write operations source (opens the vendor's page in a new tab) | CampaignsIncludedDraft, steps, CSV import, preflight, launch after your yes, pause details |
| Leads | LeadsPartly, or at extra costLead data and lead lists built in the chat, per the blog 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 | RepliesPartly, or at extra costMaster Inbox data and reply categories, per the blog; sending replies is not described 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 and diagnostics | Analytics and diagnosticsIncludedCampaign insights, deliverability and health diagnostics source (opens the vendor's page in a new tab) | Analytics and diagnosticsPartly, or at extra costSent, replies and bounces per campaign; warm-up inbox and spam rate per mailbox details |
| Sign-in | Sign-inIncludedAPI key in the URL, SSE through npx 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 |
Smartlead facts checked on 8 October 2026 against the linked pages. Where those pages say nothing, the cell says so.
Where each one fits
Smartlead MCP fits when
- You send from Smartlead and want the assistant to read campaign data and diagnose deliverability there
- You work in Claude Desktop
Outreach2day MCP fits when
- You need domains and mailboxes bought and set up from the chat
- You want warm-up started and tracked per mailbox before the mailboxes reach Smartlead
- Your assistant is ChatGPT, Codex, Cursor, VS Code or another remote MCP client with OAuth sign-in
Using Smartlead MCP and Outreach2day MCP together
Use ours for the infrastructure and Smartlead's for the sequences. The assistant buys domains and mailboxes with our server and runs warm-up; after 14 days it exports the warm mailboxes to the Smartlead account you connected in Outreach2day, after you confirm.
Smartlead's server then reads the campaigns and diagnostics in Smartlead. Mailboxes for Instantly and Smartlead covers the setup.
The Outreach2day MCP server, job by job
Tools, an example session, prompts per assistant and the limits for each job.
- Outreach2day MCP serverServer URL, setup per client, the full tool list
- Outbound end to endDomains, mailboxes, warm-up, campaign and replies from one assistant
- Domains and mailboxesCheck names, quote, pay on Stripe and track setup; or connect your own domains
- Warm-upStart warm-up and get inbox rate, spam rate and ready date per mailbox
- CampaignsDraft the sequence, import contacts, launch, read stats and replies
Questions
Does Smartlead have an official MCP server?
Yes. Smartlead's help center documents an SSE server at mcp.smartlead.ai that authenticates with an API key in the URL and lists Claude Desktop as the supported client.
Can Smartlead's MCP server work in ChatGPT or Cursor?
The help center names Claude Desktop only and says only SSE works for now. Smartlead's blog says any MCP client. Check the help center before you plan on another client.
Can I send Outreach2day mailboxes to Smartlead from the assistant?
Yes. Connect Smartlead in Outreach2day once; the assistant then exports warm mailboxes with export_mailboxes_to_sequencer after you confirm. Their SMTP/IMAP logins go to your Smartlead account.
Does either server buy domains?
Ours does: it checks names, quotes domains and mailboxes and returns a Stripe link you pay. Smartlead's MCP pages do not describe buying domains.
More comparisons
- Instantly MCP vs Outreach2day MCPInstantly's full V2 API as tools, next to our infrastructure server; export between them
- lemlist MCP vs Outreach2day MCPlemlist's prospecting, campaign and inbox server, next to our infrastructure server
- Apollo MCP vs Outreach2day MCPApollo's prospecting and sequences server, next to our infrastructure server
- Outreach2day vs SmartleadMailboxes, warm-up and sending side by side, with full-setup cost
- All providers, scoredSeven criteria, published weights, sources
- MCP servers for cold emailBlog
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
Free call
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Smartlead 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.