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 plansCompared 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




