Warmup Inbox
Email deliverability tools
Email testing software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$7 per inbox per month
Free TrialFree version
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What is Warmup Inbox
Warmup Inbox is an email deliverability tool focused on warming up mailboxes by automatically sending, receiving, and interacting with emails to help establish sender reputation. It is used primarily by sales teams, recruiters, and outbound email senders who rely on cold email and want to reduce the likelihood of messages landing in spam. The product centers on automated warm-up workflows and basic monitoring of inbox placement signals rather than full campaign execution. It is typically deployed alongside a separate outbound or marketing email platform.
Automated mailbox warm-up
Warmup Inbox automates sending and replying behaviors intended to simulate normal mailbox activity. This reduces the manual effort required to ramp up a new domain or mailbox before higher-volume outreach. It is well aligned to teams that need a dedicated warm-up layer rather than a full email marketing suite.
Designed for outbound senders
The product is oriented toward cold email and sales outreach use cases where sender reputation and inbox placement are frequent constraints. It fits workflows where users connect one or more mailboxes and run warm-up continuously in the background. This specialization can be simpler to adopt than broader platforms that bundle warm-up with campaign features.
Mailbox-level operational focus
Warmup Inbox focuses on mailbox health and activity patterns rather than template design, list management, or campaign orchestration. This makes it easier to use as a complement to existing sending tools. It can be applied per mailbox, which is useful for teams managing multiple individual senders.
Limited testing suite depth
Compared with dedicated email testing software, Warmup Inbox is not positioned as a full pre-send testing environment. It does not typically replace tools that provide comprehensive rendering previews, client/device testing, or advanced QA workflows. Teams with heavy marketing email QA requirements may need an additional testing product.
Not a full sending platform
Warmup Inbox is not designed to run end-to-end email campaigns with segmentation, automation journeys, and analytics. Users generally need a separate system for campaign creation and delivery. This can add operational complexity for organizations looking for an all-in-one approach.
Vendor details not well verified
Publicly verifiable corporate details (legal entity name, founding year, and headquarters) are not consistently available from authoritative sources. This can complicate vendor due diligence for procurement, security review, and compliance documentation. Buyers may need to request formal company information directly from the vendor.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Basic | $19 per inbox/month (monthly) — $15 per inbox/month (billed annually; $228/year) | 75 warm-up messages/day; up to ~25% reply rate; spam & category monitoring; email reputation check; add your own templates; outreach sequences; dashboards; API access; customer support chat. |
| Pro | $59 per inbox/month (monthly) — $49 per inbox/month (billed annually; $588/year) | 250 warm-up messages/day; up to ~45% reply rate; choose warm-up topics; language warmup; custom warmup settings; template statistics; specific ESP warmup; scheduled warmup; priority support. |
| Max | $99 per inbox/month (monthly) — $79 per inbox/month (billed annually; $948/year) | 1000 warm-up messages/day; up to ~65% reply rate; premium customer support; technical setup check; unlimited developer API access; inbox rotation; early access to new features. |
Additional official offerings (from Warmup Inbox Help Center):
- Send-only (SMTP-only) plan: $139 per month — up to 150 warmup emails/day; includes Pro-level features; not shown on main pricing page but available when connecting an SMTP-only provider.
- Monitoring plans: Free Monitoring plan — permanently free (sends 5 monitoring emails/day); Paid Monitoring plan — $7/month (sends 50 monitoring emails/day).
Seller details
Warmup Inbox
London, United Kingdom
2019
Private
https://warmupinbox.com/
https://x.com/warmupinbox
https://www.linkedin.com/company/warmup-inbox
