MxToolbox Inbox Placement

Spec sheet

What it does

Inbox Placement reports whether messages sent to major mailbox providers reach the inbox, spam/junk, another category, or fail delivery.Read 15 Oct 2026 · mxtoolbox.com

Purpose

Inbox Placement tests where messages land at major inbox providers: Inbox, Spam/Junk, or undelivered.Read 8 Oct 2026 · mxtoolbox.com

Intended users

MxToolbox describes Delivery Center as serving email novices, professionals, marketers, and technicians.Read 8 Oct 2026 · mxtoolbox.com

Support

Paid-plan features include onboarding support and an account walkthrough with an expert support team.Read 8 Oct 2026 · mxtoolbox.com

Headquarters

Austin, Texas, United StatesRead 28 Sep 2026 · mxtoolbox.com

API authentication

API requests use HTTPS, JSON responses and an API key supplied in the Authorization header.Read 15 Oct 2026 · api.mxtoolbox.com

API quotas

Free API accounts receive 64 DNS requests per day and no network requests; paid quotas depend on the plan.Read 15 Oct 2026 · api.mxtoolbox.com

API SDK position

The API quick-start says no SDK is required and can be used with any HTTP client.Read 15 Oct 2026 · api.mxtoolbox.com

Authentication analysis

The feature analyzes SPF authentication and alignment, DKIM alignment, DMARC compliance and BIMI readiness.Read 15 Oct 2026 · mxtoolbox.com

Authentication checks

It analyzes email headers and DNS records for SPF, DKIM, and DMARC configuration and compliance.Read 8 Oct 2026 · mxtoolbox.com

Blacklist detection

Adaptive monitoring checks domain and sending-IP reputation against active blacklist problems.Read 15 Oct 2026 · mxtoolbox.com

Bulk sender rules

It tests against Google, Microsoft, and Yahoo bulk sender requirements, including spam-rate, DMARC, and one-click unsubscribe criteria.Read 8 Oct 2026 · mxtoolbox.com

Bulk-sender compliance

Tests cover Google, Microsoft and Yahoo bulk-sender requirements such as spam-rate thresholds, DMARC policy and one-click unsubscribe.Read 15 Oct 2026 · mxtoolbox.com

Company facts

LinkedIn lists MxToolBox as privately held, founded in 2003, headquartered in Austin, Texas, with 11–50 employees.Read 15 Oct 2026 · linkedin.com

Company identity

The legal company name shown on MxToolbox’s contact page is MxToolbox, Inc.Read 15 Oct 2026 · mxtoolbox.com

Content analysis

Reports check spam-like wording, image counts, links and one-click-unsubscribe compliance.Read 15 Oct 2026 · mxtoolbox.com

Continuous monitoring

Users can add MxToolbox test inboxes to active mailing lists to monitor every campaign automatically.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Data protection

The DPA identifies MxToolbox, Inc. at 12710 Research Blvd., Austin, Texas and references GDPR, UK GDPR and Swiss transfer safeguards.Read 15 Oct 2026 · mxtoolbox.com

Deployment model

The product pages describe a hosted web service accessed through Delivery Center and do not describe self-hosting or an open-source licence.Read 15 Oct 2026 · mxtoolbox.com

Email rendering

MxToolbox renders messages across email clients and highlights formatting issues.Read 15 Oct 2026 · mxtoolbox.com

Email retention

Emails sent to Inbox Placement are temporarily stored and deleted after 180 days, and the help page says they are inaccessible on a secure server.Read 8 Oct 2026 · knowledgebase.mxtoolbox.com

Integration catalog

Delivery Center documentation lists integrations for Inbox Placement, BIMI, DMARC, SPF, Yahoo feedback loops, Validity, Mailgun, Google Postmaster, Microsoft SNDS and SendGrid.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Limit: Capterra pricing and service

Capterra reviews include complaints that enterprise use can be expensive and that cancellation or refund support after a trial can be poor.Read 15 Oct 2026 · capterra.com

Limit: G2 interface

G2’s review summary identifies the user interface as an area some reviewers want improved.Read 15 Oct 2026 · g2.com

Limit: Trustpilot billing complaints

Several Trustpilot reviewers allege unexpected charges, difficulty cancelling, delayed refunds or unresponsive customer service.Read 15 Oct 2026 · trustpilot.com

Limit: TrustRadius interface and gaps

TrustRadius reviews request a clearer or newer interface, more beginner guidance, richer test results and features such as temporary test inboxes or dark mode.Read 15 Oct 2026 · trustradius.com

Message retention

Inbox Placement emails are stored on a secure server and deleted after 180 days.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Praise: Capterra features

Capterra reviewers praise the product’s email-management, security, tracking and dashboard capabilities.Read 15 Oct 2026 · capterra.com

Praise: G2 usability

G2’s review summary says users repeatedly praise ease of use, broad features and quick real-time results.Read 15 Oct 2026 · g2.com

Praise: TrustRadius diagnostics

TrustRadius reviewers repeatedly value comprehensive DNS and email checks, real-time SMTP diagnostics and blacklist visibility.Read 15 Oct 2026 · trustradius.com

Pre-send testing

Users can send draft campaigns to MxToolbox seed addresses before sending to recipients.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Product launch news

MxToolbox announced Inbox Placement as a new view for campaign testing and ongoing monitoring in a blog post dated November 24, 2023.Read 15 Oct 2026 · blog.mxtoolbox.com

Provider coverage

The service tests Google, Yahoo and Microsoft Outlook/Office 365 mailbox placement.Read 15 Oct 2026 · mxtoolbox.com

Public API

MxToolbox provides a REST API for DNS, email, network and blacklist lookups plus monitor and usage queries.Read 15 Oct 2026 · api.mxtoolbox.com

Rating on Capterra

4.5 out of 5 from 6 reviewsRead 15 Oct 2026 · capterra.com

Rating on G2

4.1 out of 5 from 29 reviewsRead 15 Oct 2026 · g2.com

Rating on Trustpilot

4.2 out of 5 from 19 reviewsRead 15 Oct 2026 · trustpilot.com

Rating on TrustRadius

8 out of 10 from 20 reviews and ratingsRead 15 Oct 2026 · trustradius.com

Refund policy

The product page advertises a risk-free 30-day money-back policy with Delivery Center access.Read 8 Oct 2026 · mxtoolbox.com

Reputation checks

It detects blacklist issues associated with sending domains and IP addresses and tests provider-specific spam rules and blocklists.Read 8 Oct 2026 · mxtoolbox.com

Results table

Received Messages provides sortable results that can be filtered by date, subject or source and includes MxScore, delivery status and MxTip warnings.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Security controls

The security statement describes role-based access controls, least-privilege access, change management, static code analysis, backups, disaster recovery and event monitoring.Read 15 Oct 2026 · mxtoolbox.com

Security transport

MxToolbox requires HTTPS/TLS encryption for authentication and customer application interfaces.Read 15 Oct 2026 · mxtoolbox.com

Sending systems

The product page says it works with any email sending system, naming HubSpot, Mailchimp, Marketo, Salesforce, and 100+ more.Read 8 Oct 2026 · mxtoolbox.com

Sending-system compatibility

MxToolbox says the feature works with HubSpot, Mailchimp, Marketo, Salesforce and more than 100 other sending systems.Read 15 Oct 2026 · mxtoolbox.com

Standalone status

Inbox Placement is a feature of MxToolbox Delivery Center, accessed through a Delivery Center plan.Read 8 Oct 2026 · blog.mxtoolbox.com

Support model

Free users submit feedback or bug requests, paid customers receive English support during normal business hours, and managed-service customers get live support and recurring reviews.Read 15 Oct 2026 · knowledgebase.mxtoolbox.com

Supported providers

The setup guide names Google Gmail, Microsoft Outlook 365, and Yahoo Mail as test providers.Read 8 Oct 2026 · knowledgebase.mxtoolbox.com

Testing modes

Users can send pre-send tests to a proprietary seed list or add test inboxes to active mailing lists for continuous monitoring.Read 8 Oct 2026 · mxtoolbox.com

Plans and prices

Every MxToolbox Inbox Placement plan and price →

Where Specifiction places it

• Email Deliverability Software#5 of 318.7