ImprovMX offers first class email forwarding to your existing inbox, with additional advanced features[1].
SendGrid is an API-first email sending platform for transactional and marketing emails that doesn't offer native inbound email routing.
Choose Sendgrid if you need a fully featured API based email sending service. Choose ImprovMX if you need email forwarding and need to do SMTP sending.
ImprovMX
SendGrid
Customer Support
Excellent Human & AI Support, 4.8 star Trustpilot rating
1.2-star Trustpilot rating, very poor reputation[2]
Inbound Email
Native email forwarding and inbound webhooks
Only offered as part of inbound webhooks
Transparent Pricing
Fully transparent and predictable pricing
Pricing page, but unexpected overage fees common
Free plan
Free-forever forwarding for one domain
Free plan limited to 60 days
Advanced Forwarding
Offers Webhooks
Webhook Types
Inbound email webhooks
Inbound email and event webhooks
Limits
Transparent limits, talk to us for uncapped limits
Transparent limits but hidden overage fees
Email Tracking
No open or click tracking
Full email engagement tracking
API
API manages domain, aliases and forwarding
API manages app email sending, tracking & delivery
CLI/MCP
Email commands available via the Twilio CLI.
Email Send API
Not offered, but a send API is in progress
Offers a full REST sending API
Ownership
A sustainable profitable bootstrapped company
Compliance
ImprovMX is GDPR compliant
1. ImprovMX offers SMTP sending, rules routing, wildcard addresses, multiple recipient destinations, regex aliases and webhooks.
2. Sendgrid users cite slow or unresponsive support. Live chat is also limited to paid Email or Marketing Campaign plans, whereas ImprovMX offers live chat even for free users.
3. Sendgrid users cite service degradation.
4. ImprovMX's CLI is built for terminal workflows, automation, and ai coding tools like Claude Code and OpenAI Codex.
Questions? Reach out to us, we love chatting about email service providers.
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