ImprovMX

Web · API · paid plans from $4.17/mo

Freedom report

Two barsScore 6.4

  • Free tierA free tier is on its own pricing page
  • Open codeNo open-source code on record
  • Runs widely1 of 6 device platforms
  • DocumentedPlans, terms and facts published

ImprovMX provides email forwarding for custom domains, with tools for routing incoming mail and sending from a domain. It supports catch-all and regex aliases, customizable rules, and forwarding one alias to multiple destinations. Users can send through the JSON Send API or SMTP, though SMTP sending is a paid-plan feature. Its REST API can manage domains and aliases programmatically. The free plan includes one domain, 25 aliases, 500 forwarded emails per day, and seven-day email-log retention. Premium is 9.00 USD per month, Pro is 24.00 USD per month, and Light is 50.00 USD per year. Logs record delivery details such as sender, destination, event, and status, but not message contents. The maker says it encrypts stored data, uses TLS for supported SMTP connections, and does not sell data or log forwarded email content. When an account reaches its forwarding quota, mail processing stops until the quota resets at 00:00 UTC; mail that arrives during that period is bounced to senders.

Who it is for

ImprovMX suits individuals and organizations that want email addresses on a custom domain forwarded to existing destinations. Its API and routing options may also fit teams managing multiple domains or aliases programmatically.

What is good

  • Free plan includes one domain and 25 aliases.
  • Catch-all, regex, and customizable routing rules.
  • One alias can forward to multiple destinations.
  • REST API manages domains and aliases.
  • Logs show delivery status without email content.

What to know first

  • Free plan caps forwarding at 500 emails per day.
  • SMTP sending requires a paid plan.
  • Quota overages stop processing and bounce incoming mail.

Verdict

ImprovMX offers custom-domain forwarding, routing controls, and API access across free and paid plans. Review the daily forwarding allowance and SMTP requirements before relying on it for a domain.

ImprovMX plans and pricing

All plans
Free Free 1 domain · 25 aliases · 500 forwarded emails/day · 7-day email log retention · 99% uptime guarantee · API access · standard email and chat support improvmx.com · 30 Sept 2026
Premium $9/mo Monthly Up to 30 domains · 100 aliases/domain · 10 rules/domain · 5,000 forwarded emails/day · 12,000 SMTP sends/month · email logs up to 180 days · webhooks · priority email and chat support improvmx.com · 30 Sept 2026
Pro $24/mo Monthly Up to 100 domains · 200 aliases/domain · 50 rules/domain · 15,000 forwarded emails/day · 60,000 SMTP sends/month improvmx.com · 30 Sept 2026
Light $50/yr Yearly Up to 5 domains · 25 aliases/domain · 5,000 forwarded emails/day · 750 SMTP sends/month · 5 rules/domain improvmx.com · 30 Sept 2026
Enterprise Not published Custom Unlimited domains, aliases, forwarding, and SMTP sends · dedicated account manager · support SLAs improvmx.com · 30 Sept 2026

Compared on email forwarding services

Free plan
Yes
Custom domain
Yes
Alias limit
25
Catch-all forwarding
Yes
Multiple recipients
Yes
Outbound or reply mail
Yes
Delivery logs
Yes
API access
Yes

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