ImprovMX is an email forwarding service that lets individuals and organizations send and receive mail from custom domains. It is aimed at indie makers, small businesses, and teams that need domain email without running a mail server.

Domain aliases - Create aliases, catch-all addresses, and regex-based addresses per domain.
Routing rules - Control incoming mail with customizable rules, multi-destination forwarding, and webhooks.
SMTP sending - Send mail from the custom domain over SMTP or a JSON API.
Email logs - Inspect delivery history to troubleshoot missing messages.
API access - Manage domains, aliases, and logs programmatically with secure API keys.
Privacy controls - Choose logging levels; the service states it does not read emails or sell data.

ImprovMX is useful for founders and teams managing many domains who want reliable forwarding with minimal setup.

The Free plan costs $0 with 1 domain and 500 forwarded emails per day; Premium costs $9 per month and Pro costs $24 per month with higher domain, alias, and volume limits.