ImprovMX vs SendPortal: Features, Pricing and User Reviews 2026
Compare features, pricing, reviews, and more to make an informed decision
ImprovMX
ImprovMX is a simple email forwarding service that lets you send and receive emails using your custom domain without hosting.
SendPortal
SendPortal is a free open-source email marketing platform that lets you manage newsletters and campaigns on your own server.
ImprovMX
ImprovMX is a simple email forwarding service that lets you send and receive emails using your custom domain without hosting.
SendPortal
SendPortal is a free open-source email marketing platform that lets you manage newsletters and campaigns on your own server.
ImprovMX
Custom domain email forwarding to existing inbox
SMTP sending for professional outbound emails
Catch-all addresses and regex routing rules
Fast 5-second average forwarding time
99.99% uptime guarantee
Email logs with configurable retention
API for programmatic management
GDPR compliant and privacy focused
No email storage on servers
Multiple domain support on paid plans
SendPortal
Free and open-source software
Self-hosted on your own server
Unlimited subscribers and campaigns
CSV and API subscriber imports
Custom audience segments
Email template builder
Automatic tracking of opens and clicks
Multiple workspace support
Integration with major email services
Complete data ownership
No monthly fees or hidden costs
ImprovMX
ImprovMX offers transparent pricing with a forever-free plan and scalable paid options.
The Free Plan includes 1 domain, 25 email aliases, basic forwarding features, and 7 days of email logs. This plan is perfect for personal projects and side businesses.
Premium ($9/month) expands to 30 domains, 100 aliases per domain, 10 routing rules per domain, 6,000 SMTP emails monthly, and up to 180 days of log retention with a 99% uptime guarantee.
Pro ($24/month) offers 100 domains, 200 aliases per domain, 50 routing rules per domain, 30,000 SMTP emails monthly, and the same extended logging and uptime guarantee.
Enterprise (Custom Pricing) provides unlimited everything with a 99.99% uptime guarantee, white-label options, and dedicated support. Contact their team for custom pricing based on your specific needs.
SendPortal
SendPortal is completely free to download and use. There are no subscription fees, no per-subscriber charges, and no feature limitations. The software is open-source and licensed under MIT, which means you can use it for any purpose, including commercial projects.
However, you will need to cover two costs:
Hosting: You need a web server to run SendPortal. This could be a shared hosting account, VPS, or cloud server. Costs vary from $5 to $50 monthly depending on your needs and traffic.
Email Sending Service: SendPortal connects to third-party services to send emails. Amazon SES costs around $0.10 per 1,000 emails. Mailgun offers 5,000 free emails monthly, then $0.80 per 1,000. These services are much cheaper than traditional email marketing platforms.