MailMonitor
MailMonitor is email deliverability software combining diagnostic tools and services to help messages reach inboxes.
What MailMonitor is
MailMonitor is email deliverability software combining diagnostic tools and services to help messages reach inboxes. It measures placement across more than 400 real inboxes at over 90 ISPs, with monitoring for inbox placement, sender reputation, authentication, blocklists, and spam traps. The Deliverability Foundation plan includes an email authentication audit and blocklist monitoring. Strategic Partnership adds an in-depth deliverability audit and 24/7 reputation monitoring. MailMonitor says it works with all email service providers, including Mailchimp, Sendgrid, Marketo, HubSpot, and Klaviyo. Its REST API gives programmatic access to information shown in the interface, but the account must have API access enabled. Support varies by plan: Foundation includes analytics help by ticket, Strategic Partnership has priority support, and Enterprise includes chat with the team. Listed annual plans are The Deliverability Foundation at $1,000 a year, The Strategic Partnership at $2,000 a year, and Custom Enterprise Solution at $3,000 a year. New non-Enterprise paying accounts can use a five-day free trial and avoid a charge by canceling within that period.
Good
- Tracks placement across 400+ inboxes and 90+ ISPs
- Includes authentication and blocklist monitoring
- Works with named email service providers
- REST API provides programmatic access to interface data
- Five-day trial for new non-Enterprise paying accounts
Watch out
- No free plan
- API access must be enabled for an account
- Plans are billed annually
- May not fit cold outbound without warm-up or opt-in
Who it suits
MailMonitor is aimed at senders sending over 10,000 emails annually whose revenue depends on email performance. The pricing page says it may not fit senders relying entirely on cold outbound without a warm-up or opt-in strategy.
Verdict
MailMonitor combines inbox placement tracking with audits, reputation monitoring, and API access. Check the plan details against your sending approach and support needs before choosing an annual plan.
Plans and prices
From MailMonitor's own pricing page, checked 29 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| The Deliverability Foundation | $1,000 a year | B2C seeds only · Billed annually · Investment starts at this price and billed annually |
| The Strategic Partnership | $2,000 a year | B2C + B2B inbox placement testing · Billed annually · Investment starts at this price and billed annually |
| Custom Enterprise Solution | $3,000 a year | Custom solution · Billed annually · Investment starts at this price and billed annually |
The facts
Each one read from MailMonitor's own pages, with the date it was checked.
What it does
- API
- MailMonitor offers a REST API for programmatic access to data shown in its user interface, and says API access must be enabled for an account.checked 29 Sep 2026
- Audits
- The Foundation plan includes an email authentication audit, and the Strategic Partnership plan adds an in-depth deliverability audit.checked 29 Sep 2026
- Inbox testing
- The service tracks email placement across 400+ real inboxes spanning over 90 ISPs.checked 29 Sep 2026
- Integrations
- MailMonitor says it works with all email service providers, naming Mailchimp, Sendgrid, Marketo, HubSpot, and Klaviyo.checked 29 Sep 2026
- Monitoring
- The Strategic Partnership plan includes 24/7 reputation monitoring and blocklist monitoring is included in the Foundation plan.checked 29 Sep 2026
- Notable limitation
- The pricing page says MailMonitor may not be a fit for senders using 100% cold outbound without a warm-up or opt-in strategy.checked 29 Sep 2026
- Privacy
- The privacy policy says sensitive payment information is transmitted via SSL and encrypted in payment gateway providers’ databases, and is not stored on MailMonitor’s servers after a transaction.checked 29 Sep 2026
- Security
- The API uses HTTP Basic authentication over SSL and is not available over unencrypted HTTP.checked 29 Sep 2026
- Support
- Foundation includes analytics assistance by ticket, Strategic Partnership includes priority support access, and Enterprise includes chat communication with the team.checked 29 Sep 2026
- What it does
- MailMonitor is an email deliverability software application with diagnostic tools and hands-on services to help emails reach inboxes.checked 29 Sep 2026
- Who it is for
- The pricing page says it is a fit for senders sending over 10,000 emails annually whose revenue is tied to email performance.checked 29 Sep 2026
The company
- Company
- MailMonitor Inc. describes itself as a B2B tech company based in New Hampshire and says it has operated since 2010.checked 29 Sep 2026
- Founded
- 2010checked 28 Sep 2026
- Headquarters
- Salem, New Hampshire, United Stateschecked 28 Sep 2026
Money
- Trial
- The terms describe a 5-day free trial on new non-Enterprise paying accounts, with no charge if canceled within five days.checked 29 Sep 2026
Alternatives to MailMonitor
- 1
DMARC Report
Free planAndroidiOSWebAPI7.9From $25 a month - 2
Postmark
Free planWebAPI7.6Free plan - 3
Folderly
Free planWebAPI7.4Free plan - 4
GlockApps
Free planWebAPI7.4From $59 a month - 5
Unspam.email
Free planWebAPI7.4From $5 a month - 6
dmarcian
Free planWebAPIExtension7.3From $24 a month