Integrations

Every Email Provider. One Inbox Engine.

Q: Which email providers does Warmy support?

Warmy works with every major email service provider and mailbox, including Klaviyo, Mailchimp, HubSpot, Salesforce Marketing Cloud, SendGrid, Amazon SES, Brevo, Google Workspace and Microsoft 365. Anything that sends over SMTP or OAuth can be connected.

Q: My provider is not on the list. Can I still use Warmy?

Yes. The directory shows the platforms we see most often, but the connection itself is standard SMTP, IMAP, OAuth or API, so unlisted and self-hosted platforms work the same way.

Q: Do I need to change my sending platform?

No. Warmy sits alongside your existing stack. You keep sending campaigns where you send them today, and Warmy warms the domain, tests placement and reports on reputation.

Q: How long does it take to connect a provider?

Less than 25 seconds for most setups. OAuth mailboxes connect in one click, and SMTP setups need only host, port and credentials.

Q: Can I connect multiple providers at once?

Yes. Agencies and enterprise teams routinely run hundreds of mailboxes across several providers from one Warmy workspace, and the API automates the whole process.

Q: Which connection methods are supported?

OAuth for Google Workspace and Microsoft 365, SMTP and IMAP for any sending platform, and our API for programmatic onboarding at scale.

Q: Is my data safe when I connect a mailbox?

Credentials and tokens are encrypted, access is scoped to the warm-up activity only, and you can revoke a connection at any time from your workspace.

Q: Does Warmy work with cold outreach tools?

Yes. Warmy runs alongside sequencers such as Instantly, Smartlead, Lemlist and Apollo, so warm-up continues while your campaigns keep sending.

Q: Will warm-up emails mix with my real campaigns?

No. Warm-up traffic runs on its own network of real accounts and stays separate from your campaign sends, statistics and lists.

Q: Can I warm up a brand new domain?

Yes. New domains are the most common starting point. Warmy ramps volume gradually, authenticates the domain and monitors placement as reputation builds.

Plug Warmy into the ESP, CRM or ecommerce platform you already send with and watch your emails move from spam to the inbox. Warm-up, placement testing, verification, DMARC and reputation - live in under 25 seconds, no migration, no new sending stack.

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100+

Supported platforms

<25 sec

Average setup time

1M+

Warm-up accounts

Three Ways To Connect Any Provider

If your platform is not listed by name, it still connects. Warmy works with anything that can send over SMTP, OAuth or our API.

One-click OAuth

Connect Google Workspace and Microsoft 365 mailboxes in seconds, with no passwords stored.

SMTP and IMAP

Any ESP or private server connects with standard credentials, including custom and self-hosted setups.

Warmy API

Automate connections, warm-up settings and deliverability reports across hundreds of accounts.

See the Warmy API

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7-day free trial - no credit card required - setup in under 25 seconds.

No code needed

Plug Warmy Into Your Stack: MCP, Zapier And Make

Let your AI assistant and your automations run deliverability for you. Trigger warm-up, launch inbox placement tests and pull reputation data from the tools your team already uses.

Warmy MCP

Connect Warmy to Claude, Cursor or any MCP client and manage warm-up, tests and reports in plain language.

Zapier

Fire Warmy actions from 7,000+ apps - new mailbox in your CRM, instant warm-up, alerts straight to Slack.

Make.com

Build visual scenarios that test placement, verify lists and route deliverability alerts on your schedule.

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FAQ

Email Provider Integrations
Frequently Asked Questions

Which email providers does Warmy support?

Warmy works with every major email service provider and mailbox, including Klaviyo, Mailchimp, HubSpot, Salesforce Marketing Cloud, SendGrid, Amazon SES, Brevo, Google Workspace and Microsoft 365. Anything that sends over SMTP or OAuth can be connected.

My provider is not on the list. Can I still use Warmy?

Do I need to change my sending platform?

How long does it take to connect a provider?

Can I connect multiple providers at once?

Which connection methods are supported?

Is my data safe when I connect a mailbox?

Does Warmy work with cold outreach tools?

Will warm-up emails mix with my real campaigns?

Can I warm up a brand new domain?

What happens after the provider is connected?

All-in-one deliverability

One Platform. Every Email Provider. Inbox Every Time.

Warm-up, testing, verification, DMARC and reputation - all in one platform. Connect in under 25 seconds, free for 7 days.

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