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Side-by-side comparisonBy the Warmy deliverability team Updated
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Warmy brings Adeline AI, personalized warm-up, real link clicks, inbox placement testing, verification and reputation monitoring together in one all-in-one deliverability platform.
Legacy Inbox Tracker is a Bird product lineage; current Inbox Insights measures placement with seed accounts and panel data, separately from email sending.
Legacy Inbox Tracker is now represented by Bird’s Inbox Insights. Historic agreements do not automatically establish current scope or pricing. Official product transition
Key takeaways
Good to knowWarmy goes beyond a single email tool: Adeline AI, warm-up, testing, monitoring and verification work together to improve your deliverability.
Warmy brings ongoing optimization, actionable intelligence and deliverability measurement into one platform. See how that broader coverage compares with the specialist capabilities below.
| Feature | Warmy | Inbox Tracker (Bird) |
|---|---|---|
| Primary focus | All-in-one, self-serve email deliverability infrastructure | Legacy Inbox Tracker is a Bird product lineage; current Inbox Insights measures placement with seed accounts and panel data, separately from email sending. |
| Best-fit audience | Teams improving and measuring sender reputation across their existing sending stack. | Email operations teams monitoring verified sending domains and provider-specific placement. |
| Verified-domain setup | Adeline AI co-pilot and AI template optimizer | A domain must be verified before it can be tracked. |
| Domain selection | Adeline AI co-pilot and AI template optimizer | Reports are selected one verified sending domain at a time. |
| Tracking controls | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Enable or disable tracked domains without deleting measurements. |
| Panel measurement | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Placement rates use seed accounts and a measurement panel. |
| Provider breakdown | Klaviyo, Mailchimp, HubSpot, SendGrid, ActiveCampaign, Google Workspace, Microsoft 365, and SMTP | Inbox/spam placement is broken down by mailbox provider. |
| Gmail tabs | Adeline AI co-pilot and AI template optimizer | Shows Primary, Promotions and other tabs when measured. |
| Data separation | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Distinguishes placement observations from own sending/engagement data. |
| Time trends | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Daily inbox and spam rates support trend investigation. |
| Status flags | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Provider rows can flag placement drops or rising deferrals. |
| Seed workflow | 500,000+ real US seed accounts, desktop and mobile; rotated monthly; speeds up warmup | Create a test and include its addresses in the real campaign. |
| Seed pools | 500,000+ real US seed accounts, desktop and mobile; rotated monthly; speeds up warmup | Only account-provisioned pools are selectable. |
| Engagement cohorts | 1M+ real, protected Google Workspace, Microsoft 365, and B2C mailboxes | Tests can compare engaged and dormant recipient profiles. |
| Regional selection | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Seed tests support region choices. |
| CSV export | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Seed addresses can be downloaded as CSV. |
| Authentication results | SPF, DKIM, and DMARC tracking, record checks, and DMARC report analysis | Finished tests include SPF, DKIM and DMARC results. |
| Usage allowance | Warmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature. | Seed tests draw on a monthly account allowance. |
| Pricing and billing | From $49/month, billed monthly | Current Inbox Insights is custom quoted; legacy Tracker is not a separate current tier. Custom monitoring agreement |
| Trial and free access | Seven days, no credit card required | Trial availability and terms unverified in the reviewed official material. |
The detailed analysis
Email operations teams monitoring verified sending domains and provider-specific placement.
Bird retains an official legacy Inbox Tracker pricing page and explicitly directs new evaluation to Inbox Insights. The legacy page distinguishes existing Tracker agreements from current Insights scope.
Inbox Tracker is the legacy name in Bird’s product lineage. Evaluate the current Inbox Insights offering and request a written scope from Bird; historical Tracker agreements do not establish current Insights entitlements.
Bird explains that server acceptance does not identify inbox versus spam placement. Inbox Insights uses seed accounts and a measurement panel to observe that last step, while delivery and engagement figures come from sending data.
This distinction is valuable for teams seeing normal delivery rates but falling engagement. The interface’s estimated inboxed volume applies observed placement rates to delivered volume; it should not be represented as direct observation of every production recipient.
A seed test selects a pool, engagement profile and regions, then returns addresses to include in a real send. Results appear after those mailboxes receive the message.
This requires an operational campaign step, not just connecting a dashboard. Ensure the addresses are included before the stated expiry and interpret engaged-versus-dormant differences as cohort observations, rather than a universal result for the whole subscriber base.
Tracking requires a verified sending domain, and reports are viewed one domain at a time. Provider rows combine measured placement with relevant sending statistics and highlight possible declines or deferrals.
Use this to investigate a provider-specific incident without conflating it with a whole-domain outage. A dash denotes a measurement gap rather than zero performance, so missing panel observations should not be turned into a claim of perfect or failed delivery.
Current Inbox Insights pricing is quote-based around seed tests, domains and monitoring needs. Bird explicitly separates monitoring from sending charges and says legacy Tracker terms do not automatically carry forward.
A renewal request should specify monitoring frequency, domains, support, renewal periods and additional capacity rules. Do not attach a Bird email-sending price or historic Tracker allowance to current Insights unless the signed scope explicitly includes it.
Warmy documents automated warm-up conversations and reputation-oriented engagement. That is an active mailbox-readiness workflow rather than a panel-and-seed measurement methodology.
Bird’s current documentation is useful for diagnosing where a real campaign lands and separating it from server acceptance. Choose measurement depth and warm-up operation independently; neither source establishes that the products have identical mechanisms.
The Warmy advantage
From Adeline’s next-step guidance to real engagement and provider-level measurement, Warmy connects the work that separate email tools leave to your team.
Adeline connects authentication, DNS, inbox placement, blocklists, content, engagement and provider signals into one picture. She builds personalized deliverability plans, detects spam risk and explains what to change next.
Personalized timing, volume and pacing, with gradual ramp-up and engagement that includes opens, replies, important markings and moving messages out of spam.
Warmy’s engagement includes real clicks on your links, alongside opens and other natural mailbox interactions.
1M+ real, protected Google Workspace, Microsoft 365, and B2C mailboxes
500,000+ real US seed accounts, desktop and mobile; rotated monthly; speeds up warmup
Included: 5–50 tests/month by tier, with automated testing. Provider-level results distinguish inbox, Promotions and spam, so you can measure progress instead of relying on SMTP acceptance alone.
Domain/IP reputation tracking, blacklist alerts, spam-placement reports
SPF, DKIM, and DMARC tracking, record checks, and DMARC report analysis
Direct Google Postmaster integration
Check address validity as part of the wider deliverability workflow, alongside reputation work, placement testing and monitoring.
AI template optimization, custom warm-up topics and templates, and conversations in 30+ languages.
Multiple mailboxes and domains; 100 to 5,000 warmup emails/day by plan. Auto-archive keeps warm-up conversations out of your working inbox.
Klaviyo, Mailchimp, HubSpot, SendGrid, ActiveCampaign, Google Workspace, Microsoft 365, and SMTP. Self-serve setup in minutes via OAuth or SMTP/IMAP.
Documented API included on every plan. 24/7 human support; dedicated CSM and deliverability consultant on Expert/Platinum.
Allowances and dedicated support vary by plan. Plans starting from $49 / month.
Plans and total cost
| Pricing detail | Warmy | Inbox Tracker (Bird) |
|---|---|---|
| Starting price | $49/ month | Current Inbox Insights is custom quoted; legacy Tracker is not a separate current tier. |
| Billing | Monthly | Custom monitoring agreement |
| Free trial | Seven days, no credit card required | Trial availability and terms unverified in the reviewed official material. |
| Also included | Adeline AI, warm-up, placement tests, monitoring, verification and API access; allowances vary by plan. | See the individual features and published plan allowances below. |
Plans starting from $49 / month. See Warmy’s five plans
A mailbox subscription, an address-verification credit, a rendering test and an SMTP sending allowance buy different outcomes. Compare total cost using your own mailbox count, list size, testing frequency and sending volume; do not equate a lower unit price with equivalent coverage.
Social proof
Rated 4.9/5 on G2 and trusted by 35,000+ businesses.
“Warmy has been a game changer for us. The platform pays for itself many times over.”
“If you do cold email, Warmy will increase your efficiency, improve your deliverability, and cut your costs.”
Thomas Tzouridis“I've purchased many marketing tools before. Often, once you buy, you're on your own. With Warmy, they care about you.”
The verdict
| If you want… | Choose |
|---|---|
| Everything in one platformWarm-up, placement tests, verification, authentication and reputation monitoring in one connected workflow. | Warmy |
| Adeline AI expertisePersonalized plans, predictive spam-risk detection and clear next steps from your AI deliverability expert. | Warmy |
| Real engagement and seed accountsA 1M+ mailbox network, real link clicks and 500,000+ US seed accounts. | Warmy |
| Expert help and an easy startSelf-serve setup, API access and 24/7 human support; dedicated consultant options on higher tiers. | Warmy |
| Investigate a provider-specific placement drop despite accepted delivery. | Inbox Tracker (Bird) |
| Compare engaged and dormant seed cohorts for a campaign. | Inbox Tracker (Bird) |
| Renew a legacy Tracker agreement against written current Insights scope. | Inbox Tracker (Bird) |
A practical evaluation
Investigate a provider-specific placement drop despite accepted delivery. Keep that objective separate from your sender-reputation and placement baseline.
Test a representative message with a consistent provider mix. Record authentication, inbox and spam placement before changing the sending workflow.
Inbox Tracker is the legacy name in Bird’s product lineage. Evaluate the current Inbox Insights offering and request a written scope from Bird; historical Tracker agreements do not establish current Insights entitlements.
Domain verification and seed inclusion are setup prerequisites. Keep specialist tooling where it serves a separate job. Coordinate any overlapping warm-up schedules instead of doubling engagement volume.
Compare provider-level placement alongside specialist results, bounces and complaints. Address validity, rendering previews and SMTP acceptance alone do not prove inbox placement.
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