Warmup Inbox
Warmup Inbox: A focused warm-up and monitoring suite with mailbox integrations, outreach tools, and API access. Ranked #6 of 31 in Email Deliverability Software by our editors (7.6/10); pricing: Free plan · paid from $15/mo (annual) · 7-day trial; best for affordable inbox warm-up per mailbox.
At a glance
- Editor score7.6 / 10
- PricingFree plan · paid from $15/mo (annual) · 7-day trial
- Best forAffordable inbox warm-up per mailbox
- Free planYes
- Paid from$15/mo
- Inbox placement monitoringYes
- Facts checked20 Sep 2026
Where it wins
- Automated warm-up through a network of real inboxes
- Monitors inbox, spam, category placement, reputation, and blacklists
- Connects with major mailbox and email-sending providers
Where it doesn't
- The feature set emphasizes warm-up and outbound outreach
- Listed plan rates use annual billing and charge per inbox
- Custom warm-up controls begin with the Pro tier
Our verdict on Warmup Inbox
Warmup Inbox is a SaaS platform for automating email warm-up and monitoring deliverability across major email providers. It is designed for sales, marketing, recruiting, and agency teams that need to build sender reputation, track inbox placement, or manage outbound mailboxes. The product connects through SMTP, IMAP, or OAuth and is available through the web and an API. Its feature set includes automated warm-up through a network of real inboxes, spam and category monitoring, reputation scoring, blacklist monitoring, outreach sequences, dashboards, AI-generated content, and free deliverability testing for inbox placement and authentication.
Pricing is organized by inbox and billed annually on the listed plans. Basic costs $15 per inbox per month and includes spam and category monitoring, email reputation checks, outreach sequences, dashboards, AI-generated content, and the Developers API. Pro costs $49 per inbox per month and adds custom templates, warm-up topics, language warm-up, custom warm-up settings, and specific ESP warm-up. Max costs $79 per inbox per month and adds premium customer support, a technical setup check, unlimited Developers API access, and early access to new features. A free plan and a seven-day trial without a credit card are also available.
The strongest fit is an outbound team that wants mailbox-level warm-up, placement visibility, and connections to Gmail, Google Workspace, Outlook, Microsoft 365, Amazon SES, Zoho Mail, SendGrid, Mailgun, Brevo, or custom SMTP. The REST API supports inbox lifecycle and placement metrics, which can suit teams managing mailbox operations programmatically. Warmup Inbox is less suited to organizations seeking a broad email operations platform beyond warm-up, reputation monitoring, and outreach. Teams that need custom warm-up behavior will likely need Pro, while teams requiring premium support or a technical setup check will need Max.
Warmup Inbox pricing
All 3 Warmup Inbox plans and prices →
Warmup Inbox fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $15/mo |
| Inbox placement monitoring | Yes |
| Sender reputation monitoring | Yes |
| Authentication monitoring | Yes |
| Blocklist monitoring | Yes |
| Spam trap monitoring | Not verified |
| API access | Yes |
| Free trial | 7 days · no card needed |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | GDPR |
| Support | Email, Live chat |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 10 integrations: Gmail, Google Workspace, Outlook, Microsoft 365, Amazon SES, Zoho Mail … See all → |
| Pricing | Free plan · paid from $15/mo (annual) · 7-day trial (source) |
| Website | warmupinbox.com |
| Facts checked | 20 Sep 2026 |
Warmup Inbox integrations
Warmup Inbox lists 10 integrations on its own site.
- Gmail
- Google Workspace
- Outlook
- Microsoft 365
- Amazon SES
- Zoho Mail
- SendGrid
- Mailgun
- Brevo
- Custom SMTP
See all Warmup Inbox integrations →
Alternatives to Warmup Inbox
- TrueSendTrueSend combines campaign operations with inbox placement, reputation, and authentication controls.9.6
- GlockAppsA focused toolkit for testing inbox placement, authentication, reputation, and spam risk.8.4
- Validity EngageA broad enterprise suite for monitoring inbox placement, reputation, authentication, and spam-trap risk.8.2
See all Warmup Inbox alternatives →
Warmup Inbox vs the competition
- Warmup Inbox vs TrueSend
- Warmup Inbox vs GlockApps
- Warmup Inbox vs Validity Engage
- Warmup Inbox vs EasyDMARC
- Warmup Inbox vs SenderSignal
- Warmup Inbox vs Warmy
Compare Warmup Inbox with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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