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Inboxy vs Warmy: Email Platforms Compared (2026)

By the Warmy deliverability team Updated

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real warmup mailboxes
1M+
real warmup mailboxes
US seed accounts
500K+
US seed accounts
per month, billed monthly
$49
per month, billed monthly
human support
24/7
human support

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.

Inboxy sells mailbox warm-up separately from Google Workspace mailbox provisioning. Its warm-up uses a private network with real browser sessions, configurable schedules, gradual ramps, and mailbox activity reporting.

Key takeaways

Inboxy vs Warmy at a glance

What Inboxy does
Inboxy sells mailbox warm-up separately from Google Workspace mailbox provisioning. Its warm-up uses a private network with real browser sessions, configurable schedules, gradual ramps, and mailbox activity reporting.
Best-fit workflow
Teams warming existing Gmail, Microsoft 365, or SMTP inboxes, or buying Workspace inboxes and warm-up as separate services.
Inboxy pricing
Warm-up costs USD $3/inbox/month on monthly billing; quarterly and yearly commitments lower the effective monthly rate. Workspace mailbox provisioning is a separate subscription at the same published rates.
Warmy pricing
Plans starting from $49 / month. Seven-day trial, no credit card required.
Key strength
Browser-session engagement is explicitly described rather than an unspecified automation claim.
Important trade-off
Warm-up and mailbox provisioning are separate charges.

Good to knowWarmy goes beyond a single email tool: Adeline AI, warm-up, testing, monitoring and verification work together to improve your deliverability.

Warmy vs Inboxy, Side by Side

Warmy brings ongoing optimization, actionable intelligence and deliverability measurement into one platform. See how that broader coverage compares with the specialist capabilities below.

Primary focus
WarmyAll-in-one, self-serve email deliverability infrastructure
InboxyInboxy sells mailbox warm-up separately from Google Workspace mailbox provisioning. Its warm-up uses a private network with real browser sessions, configurable schedules, gradual ramps, and mailbox activity reporting.
Best-fit audience
WarmyTeams improving and measuring sender reputation across their existing sending stack.
InboxyTeams warming existing Gmail, Microsoft 365, or SMTP inboxes, or buying Workspace inboxes and warm-up as separate services.
Private network
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyInboxy describes a private network of real inboxes for warm-up.
Browser sessions
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyThe network uses real browser sessions rather than only API calls to interact with email.
Open and read
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyPublished engagement includes opening, reading, and scrolling through messages.
Replies
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyThe service describes real back-and-forth conversations between participating inboxes.
Spam recovery
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyMessages that arrive in spam are moved back into the inbox.
Importance signals
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyThe network marks messages important and starred.
Gradual ramp
Warmy1M+ real, protected Google Workspace, Microsoft 365, and B2C mailboxes
InboxyWarm-up volume begins small and increases gradually, adapting to inbox response.
Schedules
Warmy1M+ real, protected Google Workspace, Microsoft 365, and B2C mailboxes
InboxyOperators can select warm-up days matched to the inbox timezone and adjust default settings.
Existing inboxes
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyThe service supports inboxes purchased elsewhere as well as Inboxy mailboxes.
Provider compatibility
WarmyKlaviyo, Mailchimp, HubSpot, SendGrid, ActiveCampaign, Google Workspace, Microsoft 365, and SMTP
InboxyPublished compatibility includes Gmail, Microsoft 365, and any SMTP inbox.
Reporting
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyThe dashboard tracks per-mailbox warm-up score, opens, replies, and spam saves.
Domain Score IQ
WarmyAdeline AI co-pilot and AI template optimizer
InboxyThe setup page describes domain-reputation metrics compared with Inboxy’s database of domains.
Support
Warmy24/7 human support; dedicated CSM and deliverability consultant on Expert/Platinum
InboxyPricing includes email support and specifies US/EU IP accounts only.
Separate provisioning
WarmyWarmy focuses on reputation, placement testing and monitoring; this specialist capability is not presented as an equivalent Warmy feature.
InboxyWorkspace mailbox plans include automatic SPF/DKIM/DMARC setup and sequencer connection, but warm-up is billed separately.
Pricing and billing
WarmyFrom $49/month, billed monthly
InboxyWarm-up costs USD $3/inbox/month on monthly billing; quarterly and yearly commitments lower the effective monthly rate. Workspace mailbox provisioning is a separate subscription at the same published rates. Separate per-inbox warm-up and per-mailbox hosting subscriptions
Trial and free access
WarmySeven days, no credit card required
InboxyCurrent trial terms unverified.

The detailed analysis

Where Warmy Adds Value Beyond Inboxy

Teams warming existing Gmail, Microsoft 365, or SMTP inboxes, or buying Workspace inboxes and warm-up as separate services.

01

Browser-based operation

Inboxy describes a private network of real inboxes for warm-up. The network uses real browser sessions rather than only API calls to interact with email. These are the published browser-based operation elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up

The browser-session mechanism is the central product-specific distinction. It describes how interactions are executed, not independently validated superiority over API-driven services. A pilot should inspect the observed mailbox activity and connection permissions rather than assume browser automation guarantees primary-inbox placement.

02

Engagement mix

Published engagement includes opening, reading, and scrolling through messages. The service describes real back-and-forth conversations between participating inboxes. These are the published engagement mix elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up

Opening and replying provide different activity types within the private network. The operational question is whether these interactions are visible and attributable in reports for each connected sender; published descriptions of natural behavior should not be interpreted as independent evidence of production recipient engagement.

03

Recovery and importance

Messages that arrive in spam are moved back into the inbox. The network marks messages important and starred. These are the published recovery and importance elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up

Spam recovery and importance/star actions are explicit positive-interaction mechanisms. They operate on network mail, so teams should not extrapolate the same treatment to every campaign recipient. Use them as the warm-up component of a broader sending process rather than proof that a damaged domain has fully recovered.

04

Ramps and working hours

Warm-up volume begins small and increases gradually, adapting to inbox response. Operators can select warm-up days matched to the inbox timezone and adjust default settings. These are the published ramps and working hours elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up Setup and controls

Gradual activity and selectable days/timezones help an operator align warm-up with a planned sending routine. Before onboarding many mailboxes, test how those settings behave with existing campaign schedules and provider limits. The reviewed pages do not establish a universal safe sending volume for every connected account.

05

Bring-your-own accounts

The service supports inboxes purchased elsewhere as well as Inboxy mailboxes. Published compatibility includes Gmail, Microsoft 365, and any SMTP inbox. These are the published bring-your-own accounts elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up Pricing

Existing-inbox support makes this usable without purchasing Inboxy’s Workspace product. This separation is commercially important: mailbox provisioning and warm-up are distinct subscriptions even when they share the same published per-unit rate. Confirm supported connection details for any non-Google SMTP service during onboarding.

06

Reporting and domain assessment

The dashboard tracks per-mailbox warm-up score, opens, replies, and spam saves. The setup page describes domain-reputation metrics compared with Inboxy’s database of domains. These are the published reporting and domain assessment elements relevant to evaluating inboxy's role in a deliverability stack. Warm-up Setup and controls

The dashboard’s action counts and the proprietary domain score answer different questions. Activity counters show what the warm-up service did; a reputation score is an interpretation that needs context. Buyers should request the available history, export options, and scoring explanation rather than assume the score is a direct provider-issued reputation metric.

The Warmy advantage

One Platform. Your Entire Deliverability Workflow.

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 AI deliverability expert

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.

AI-powered email warm-up

Personalized timing, volume and pacing, with gradual ramp-up and engagement that includes opens, replies, important markings and moving messages out of spam.

Real link clicks

Warmy’s engagement includes real clicks on your links, alongside opens and other natural mailbox interactions.

1M+ real mailbox network

1M+ real, protected Google Workspace, Microsoft 365, and B2C mailboxes

500,000+ US seed accounts

500,000+ real US seed accounts, desktop and mobile; rotated monthly; speeds up warmup

Inbox placement and automated tests

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.

Reputation and blacklist monitoring

Domain/IP reputation tracking, blacklist alerts, spam-placement reports

SPF, DKIM and DMARC

SPF, DKIM, and DMARC tracking, record checks, and DMARC report analysis

Google Postmaster integration

Direct Google Postmaster integration

Built-in email verification

Check address validity as part of the wider deliverability workflow, alongside reputation work, placement testing and monitoring.

AI content optimization

AI template optimization, custom warm-up topics and templates, and conversations in 30+ languages.

Multiple mailboxes and domains

Multiple mailboxes and domains; 100 to 5,000 warmup emails/day by plan. Auto-archive keeps warm-up conversations out of your working inbox.

Your existing sending stack

Klaviyo, Mailchimp, HubSpot, SendGrid, ActiveCampaign, Google Workspace, Microsoft 365, and SMTP. Self-serve setup in minutes via OAuth or SMTP/IMAP.

API and expert support

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

Warmy vs Inboxy Pricing

Warmy and Inboxy pricing compared
Pricing detailWarmyInboxy
Starting price$49/ monthWarm-up costs USD $3/inbox/month on monthly billing; quarterly and yearly commitments lower the effective monthly rate. Workspace mailbox provisioning is a separate subscription at the same published rates.
BillingMonthlySeparate per-inbox warm-up and per-mailbox hosting subscriptions
Free trialSeven days, no credit card requiredCurrent trial terms unverified.
Also includedAdeline 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

Inboxy: published plans and allowances

Warm-up monthly
USD 3inbox/month · monthly
Separate from mailbox hosting
Warm-up quarterly
USD 8.10inbox/quarter · quarterly
Effective USD 2.70/inbox/month
Warm-up yearly
USD 28.80inbox/year · annual
Effective USD 2.40/inbox/month

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

What Senders Are Saying about Warmy

Rated 4.9/5 on G2 and trusted by 35,000+ businesses.

TESTIMONIALS

Loved by senders who live in the inbox

★★★★★5.0
“Warmy has been a game changer for us. The platform pays for itself many times over.”
Darren Prine
Co-founder and CRO, Cloud Tech Gurus
★★★★★5.0
“If you do cold email, Warmy will increase your efficiency, improve your deliverability, and cut your costs.”
Thomas TzouridisThomas Tzouridis
CEO, ActiScale
★★★★★5.0
“I've purchased many marketing tools before. Often, once you buy, you're on your own. With Warmy, they care about you.”
Gábor Majer
Founder, Nord Sales Company

The verdict

Why Choose Warmy for Complete Deliverability

Which tool to choose for each need
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
Warm an existing Microsoft 365 or SMTP fleet without migrating mailbox hosting.Inboxy
Align warm-up days and timezones with an outbound team’s work schedule.Inboxy
Provision Workspace inboxes, then separately add warm-up and monitor spam saves.Inboxy

Inboxy: specialist capabilities

  • Browser-session engagement is explicitly described rather than an unspecified automation claim.
  • Can warm existing accounts without buying new mailbox infrastructure.
  • Clear monthly, quarterly, and annual per-inbox pricing.

Trade-offs to evaluate

  • Warm-up and mailbox provisioning are separate charges.
  • Published US/EU IP-account restriction may constrain other regional needs.
  • API access, export coverage, and contractual response times were not verified.

A practical evaluation

Using Warmy Alongside Inboxy

  1. 1

    Define the job for Inboxy

    Warm an existing Microsoft 365 or SMTP fleet without migrating mailbox hosting. Keep that objective separate from your sender-reputation and placement baseline.

  2. 2

    Establish a placement baseline

    Test a representative message with a consistent provider mix. Record authentication, inbox and spam placement before changing the sending workflow.

  3. 3

    Evaluate Inboxy against its output

    The browser-session mechanism is the central product-specific distinction. It describes how interactions are executed, not independently validated superiority over API-driven services. A pilot should inspect the observed mailbox activity and connection permissions rather than assume browser automation guarantees primary-inbox placement.

  4. 4

    Coordinate complementary work

    Warm-up and mailbox provisioning are separate charges. Keep specialist tooling where it serves a separate job. Coordinate any overlapping warm-up schedules instead of doubling engagement volume.

  5. 5

    Review before scaling

    Compare provider-level placement alongside specialist results, bounces and complaints. Address validity, rendering previews and SMTP acceptance alone do not prove inbox placement.

FAQ

Warmy vs Inboxy
FAQs

Inboxy sells mailbox warm-up separately from Google Workspace mailbox provisioning. Its warm-up uses a private network with real browser sessions, configurable schedules, gradual ramps, and mailbox activity reporting. Warmy focuses on sender reputation, inbox-placement testing and authentication monitoring alongside the existing sending stack.

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