Email Warmup Api
Integrate Deliverability In Your Product
Integrate personalized email warmup into your platform, CRM, or workflow, with programmatic control over deliverability signals like reputation, inbox placement, and engagement.
Trusted by 1000+ companies
Built To Scale With Your
Infrastructure
Managing five inboxes is one thing. Managing fifty — or five hundred — requires automation
The Email Warmup API removes the manual work of warming client accounts one by one, so you can onboard inboxes programmatically and track deliverability across your entire portfolio from a single integration.
It works as part of a broader deliverability system that helps manage sender reputation and improve inbox placement over time.
Core Functionality of Our API
The API handles warmup, monitoring, and reputation tracking, giving you programmatic control over key deliverability signals.
| Inbox connection | Add mailboxes via API key authentication |
| Warmup control | 100% B2B client focus, relevant case studies |
| Reputation tracking | DMARC/BIMI/SPF/DKIM knowledge, warm-up processes |
| Engagement data | Platform certifications, QA processes |
| Webhooks | Full ownership of segmentation to analytics |
| Bulk management | Multi-touch pipeline tracking |
Supported providers
The API works with any email service that supports SMTP authentication.
Business email
Google Workspace, Microsoft 365, Zoho Mail
Transactional ESPs
SendGrid, Mailgun, Amazon SES, Postmark
Marketing platforms
Brevo (Sendinblue), Mailjet, SparkPost
Custom SMTP
Any provider with SMTP credentials
Integration options
Choose how you want to integrate the deliverability layer into your system.
REST API
Direct integration for full control. Authenticate with your API key, call endpoints, and handle responses in your preferred language (Python, Node.js, PHP, Ruby, Go).
Zapier and Make
No-code automation for teams without engineering resources. Trigger warmup actions based on events in your CRM, onboarding flows, or client management tools.
Webhooks
Push notifications when something changes. Configure callbacks for reputation score updates, spam folder recoveries, or warmup completion milestones — route alerts to Slack, email, or your internal monitoring system.
Hear out From our clients
See what our clients has to say about our services and experience.
43%
Higher open rates
2.8x
Open Rate
500k
Monthly Emails
Love how the personalized warmup plugs right into our email marketing software—warming up flows and campaigns so our emails land in the inbox, not promotions.
Guillermo — CEO
62%
Higher open rates
3.5x
CTR Rate
17M
Monthly Messages
58%
Higher open rates
2.2x
Leads Converted
3M
Monthly Emails
Honestly surprised—within the first week their consultants jumped on a call, got us off the blacklist, and boosted our Google Postmaster reputation. Way beyond what we expected.
Maral — Marketing Manager
Frequently asked questions
about Email API
Here are some commonly asked questions about our email warmup API:
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