Integrations

Bring any inbox. Connect in two minutes.

Native OAuth for the providers your team actually uses, and standards-compliant SMTP + IMAP for the long tail. Reputation is bucketed per ESP so your scores stay meaningful.

Native providers

One-click OAuth into the big two.

Push subscriptions, scoped tokens, automatic refresh. You authorise once and we keep the connection healthy in the background.

G
Gmail
Personal Gmail accounts via OAuth.
W
Google Workspace
Workspace mailboxes via per-user OAuth consent.
M
Microsoft 365
Microsoft Graph with push subscriptions for real-time delivery events.
O
Outlook.com
Personal Outlook + Hotmail accounts via OAuth.
SMTP + IMAP

Standards-compliant for the long tail.

Anything that speaks SMTP works. Optional IMAP for reply detection + folder moves — strongly recommended for full warmup signal.

Z
Zoho Mail
App password + SMTP/IMAP. Auto-detected from MX records.
F
Fastmail
App-specific password. Pre-filled host on detection.
P
Proton Bridge
Connect via Proton Bridge for full SMTP+IMAP support.
M
Mailbox.org
EU-hosted privacy-focused provider. Standard SMTP/IMAP.
H
Hey.com
App password + SMTP/IMAP. Smart-folder behaviour respected.
M
Mailcow + Mailu
Self-hosted mail servers. Bring your own credentials.
P
cPanel + Plesk
Hosted mail on any cPanel or Plesk box.
S
Any SMTP server
Custom host + port + STARTTLS/TLS. Optional IMAP.
ESP coverage

Every recipient bucketed by ESP family.

We group inboxes into Google, Microsoft, Yahoo/Apple and Other so a dip in one filter never hides behind a healthy average. The placement check is a Beta feature we're rolling out gradually.

Google
G
Gmail
Inbox / Promotions / Spam placement.
Google
W
Workspace
Separate Postmaster Tools signal.
Microsoft
H
Hotmail / Outlook
Junk Mail + Focused/Other.
Microsoft
M
Microsoft 365
Business tenant filter signal.
Yahoo/Apple
Y
Yahoo Mail
Spam folder + reputation curve.
Yahoo/Apple
I
iCloud Mail
Apple Mail Privacy Protection accounted for.
Other
Y
Yandex / Mail.ru
Cyrillic ESPs — important for CEE outreach.
Other
G
GMX / others
DACH + indie hosts grouped as Other.
Automation

Plug WarmupSleuth into the tools you already run.

api

REST API Pro+

Per-tenant API keys with role-scoped permissions. List mailboxes, kick off a placement check, pull the latest reputation snapshot.

webhook

Webhooks Max

Subscribe to reputation drops, blacklist hits and per-mailbox events. Signed payloads — replay-resistant out of the box.

extension

Zapier / n8n / Make

Standard JSON and predictable status codes — any iPaaS that speaks REST can drive WarmupSleuth. Slack alerts, Notion logs, your own ETL.

Don't see your provider?

Anything that speaks SMTP works. Tell us what you'd like supported natively next.

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