Every email.
In the inbox.
Email warm-up is the process of gradually increasing sending volume from a new or dormant email account to build sender reputation with mailbox providers. Stekpad automates this with AI-generated conversations — every email unique, every interaction human. Your reputation grows. Your emails land.
Email accounts warmed up with Stekpad see 40–60% higher inbox placement rates compared to cold sending — typically reaching a 90%+ inbox rate within 2–4 weeks.
Free plan available. No credit card required.
Dashboard
Last updated just now
Health Score
92
Inbox Rate
96%
Sent Today
34
Join 500+ teams using Stekpad to land in the inbox
Trusted by teams at
Core features
Built for deliverability,
not just volume
Three systems working together to get every email where it belongs.
Hey Sarah, loved your take on the Q3 retention numbers. Quick question about the cohort analysis...
Thanks! The 90-day cohort was interesting - want me to share the breakdown?
AI-generated content
Every warm-up email is written from scratch by Llama 3.3 70B. No templates. No recycled phrases. Each thread reads like a genuine conversation between real people.
- Unique content for every single email
- 40+ personas with distinct writing styles
- Multi-turn threads that build on context
- Anti-detection: no repeated patterns
Smart ramp-up
Sending volume adjusts automatically based on real-time bounce rates, spam signals, and provider feedback. If something looks off, Stekpad pauses before damage is done.
- Adaptive volume based on live signals
- Auto-pause on bounce spikes or blacklists
- Humanized timing with timezone awareness
- Gradual scale from 5 to 40+ emails/day
Placement Results
Inbox placement testing
Send test emails to seed accounts across Gmail, Outlook, Yahoo, and iCloud. Know exactly where you land before sending a real campaign.
- Test across all major providers
- Inbox vs. spam vs. promotions breakdown
- Historical placement tracking
- Automated weekly placement reports
Getting started
Three steps to better
deliverability
Connect your mailbox
Link your email via SMTP/IMAP or one-click OAuth with Google and Microsoft. Takes under two minutes.
AI starts conversations
Unique, realistic email threads begin flowing through your account. Varied personas, topics, and writing styles.
Reputation grows
Your health score climbs as providers see genuine engagement. Monitor everything from your dashboard.
94.7%
Avg. inbox placement rate
2.4M+
Warm-up emails delivered
500+
Teams using Stekpad
<0.5%
Average bounce rate
And more
Everything else you need
Pricing
Simple, transparent pricing
Start free. Upgrade when you need more.
- 2 mailboxes
- 20 emails/day
- Community pool
- 1 placement test/month
- Email support
- Basic analytics
- 5 mailboxes (+9€/extra)
- 40 emails/day/mailbox
- Seed box network
- 4 placement tests/month
- API access
- Priority support
14-day free trial on all paid plans. No credit card required.
Testimonials
Loved by email teams
“We switched from Lemwarm and saw our inbox rate jump from 72% to 94% in three weeks. The AI-generated emails are indistinguishable from real conversations.”
Marc Dubois
Head of Outreach, ScaleUp Agency
“The smart ramp-up saved us twice. It auto-paused when our bounce rate spiked after a DNS change, then gradually resumed once everything was fixed. No manual intervention needed.”
Elena Vasquez
Email Operations Lead, GrowthHQ
“As an agency managing 40+ client mailboxes, the team features and API are exactly what we needed. Onboarding a new client takes 5 minutes now instead of an hour.”
James Chen
Founder, Outbound Partners
FAQ
Questions & answers
Everything you need to know about Stekpad and email warm-up. Proper warm-up is the single most effective way to improve email deliverability — skipping it is the leading cause of new domains landing in spam.
Email warm-up is the process of gradually increasing email sending volume from a new or dormant email account to build sender reputation with email providers like Gmail, Outlook, and Yahoo. It signals to these providers that your account is legitimate, helping your emails land in the inbox instead of the spam folder.
Most accounts see significant improvement within 2-4 weeks. However, the exact timeline depends on your starting reputation, email provider, and sending volume. Our smart ramp-up system adapts to your account's signals in real-time to optimize the process.
Absolutely. Stekpad uses humanized sending patterns with realistic timing, varied content, and proper email headers. Our adaptive system automatically pauses or reduces volume if it detects any negative signals, protecting your account at all times.
Stekpad works with all major email providers including Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, Zoho, and any provider that supports SMTP/IMAP. We also offer one-click OAuth integration for Google and Microsoft accounts.
Unlike template-based warm-up services, Stekpad's AI (powered by Llama 3.3 70B) generates completely unique emails for every interaction. Each message has different content, tone, and structure, making the warm-up conversations indistinguishable from real human correspondence.
Yes, you can cancel your subscription at any time with no questions asked. Your account will remain active until the end of your current billing period. You can also downgrade to our free plan to keep basic warm-up running.