Warmbase
Warmbase is a web-based email warm-up tool for preparing inboxes before prospect outreach.
What Warmbase is
Warmbase is a web-based email warm-up tool for preparing inboxes before prospect outreach. It sends warm-up emails through its network, opens incoming messages, replies automatically, and moves messages out of spam when they land there. It says it supports Google Workspace, Zoho, Outlook, other email services, and SMTP; it also lists warm-up pages for Yahoo, iCloud, Yandex, AOL, SendGrid, and Amazon SES. Starter costs $9 per inbox per month and includes AI conversations and scheduling controls. Professional costs $19 per inbox per month and adds weekly inbox placement reports and reputation drop alerts. Advanced costs $29 per inbox per month and includes daily placement monitoring, a multi-inbox dashboard, and an onboarding call. All plans are paid, with a 7-day free trial and no credit card required. Volume discounts are available for 10 or more inboxes. The homepage also lists free DMARC, SPF, and DKIM tools and an inbox placement test.
Good
- Automates warm-up emails, replies, and spam-folder moves.
- Supports major providers and SMTP.
- Custom warm-up scheduling is available.
- Advanced includes daily placement monitoring.
- Seven-day trial requires no credit card.
Watch out
- No free plan is listed.
- Plans are priced per inbox each month.
- Daily email limit is 50 per day.
Who it suits
Warmbase suits senders preparing inboxes for prospect outreach, from people warming one inbox to high-volume senders and teams. Those managing client inboxes may find its multi-client dashboard and volume pricing relevant.
Verdict
Warmbase automates several parts of inbox warm-up and offers monitoring that scales across its plans. Check the per-inbox cost and plan-specific reporting and support before choosing a tier.
Plans and prices
From Warmbase's own pricing page, checked 4 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Starter | $9 a month | 50 warmup emails/day per inbox · all providers + SMTP · AI warmup conversations · warmup scheduling controls · progress dashboard · chat support · $9 / inbox / mo; monthly billing shown |
| Professional | $19 a month | 75 warmup emails/day per inbox · weekly inbox placement reports · reputation drop alerts · priority support · $19 / inbox / mo; monthly billing shown |
| Advanced | $29 a month | 100 warmup emails/day per inbox · daily placement monitoring · multi-inbox dashboard · volume discount at 10+ inboxes · onboarding call · $29 / inbox / mo; monthly billing shown |
The facts
Each one read from Warmbase's own pages, with the date it was checked.
What it does
- AI and scheduling
- The Starter plan includes AI warm-up conversations and warm-up scheduling controls.checked 4 Oct 2026
- Automated warm-up
- The service sends warm-up emails through its network, opens incoming warm-up messages, replies automatically, and moves messages from spam when they land there.checked 4 Oct 2026
- Custom email setup
- Warmbase's SMTP warm-up page describes support for SMTP, while its homepage says the plans work with all providers plus SMTP.checked 4 Oct 2026
- Intended users
- Warmbase positions Starter for getting one inbox out of spam, Professional for senders who cannot afford to guess, and Advanced for high-volume senders and teams.checked 4 Oct 2026
- Privacy statement
- Warmbase says it moves messages from recipients' spam folders automatically and describes that process as maintaining privacy.checked 4 Oct 2026
- Product
- Warmbase describes itself as an email warm-up tool for preparing inboxes before prospect outreach.checked 4 Oct 2026
- Providers
- Warmbase says it works with Google Workspace, Zoho, Outlook, and any email service, and lists Yahoo, iCloud, Yandex, AOL, SendGrid, and Amazon SES warm-up pages.checked 4 Oct 2026
- Reporting
- Professional includes weekly inbox placement reports and reputation drop alerts, while Advanced includes daily placement monitoring.checked 4 Oct 2026
- Support
- Starter includes chat support, Professional includes priority support, and Advanced includes an onboarding call.checked 4 Oct 2026
- Volume pricing
- Warmbase says volume discounts are available at 10 or more inboxes and offers volume pricing and a multi-client dashboard for customers warming 10 or more inboxes or managing clients.checked 4 Oct 2026
Money
- Free tools
- The homepage lists free DMARC, SPF, and DKIM generators and checkers, plus an inbox placement test.checked 4 Oct 2026
- Trial
- Warmbase offers a 7-day free trial with no credit card required and says customers can cancel anytime.checked 4 Oct 2026
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