SMTP.com alternatives · Email Sending
Self-hosted alternatives to SMTP.com
The SMTP.com listing does not say it can be self-hosted. 7 of the 50 other email sending services in this directory can be self-hosted, according to their own sites.
SMTP.com is a paid product, starting at $25 per month for 50,000 emails. 5 of them are free or have a free plan.
7 tools · Listings checked up to Nov 13, 2026 · Where the facts come from
How each one differs from SMTP.com
- Free plan · from $10/mo
useSend
Open-source email sender built on Amazon SES
- useSend starts at $10 per month, then pay as you go. SMTP.com starts at $25 per month for 50,000 emails.
- useSend has a free plan. SMTP.com does not.
- useSend is open source and self-hostable, according to its own site.
- useSend also covers email campaigns.
- Free plan · from $0.001
Plunk
Open-source email platform for transactional and marketing mail
- Plunk starts at $0.001 per email sent. SMTP.com starts at $25 per month for 50,000 emails.
- Plunk has a free plan. SMTP.com does not.
- Plunk is open source and self-hostable, according to its own site.
- Plunk also covers workflow automation and email campaigns.
- Free plan · from €10,000/yr
Hyvor Relay
Open-source email API you can self-host
- Hyvor Relay starts at €10,000 per year and up (Enterprise License). SMTP.com starts at $25 per month for 50,000 emails.
- Hyvor Relay has a free plan. SMTP.com does not.
- Hyvor Relay is open source and self-hostable, according to its own site.
- Free trial · from $199/mo
EmailEngine
Self-hosted REST API for Gmail, Microsoft 365 and IMAP mailboxes
- EmailEngine starts at $199 per month, or $1,450 per year (€169 or €1,200). SMTP.com starts at $25 per month for 50,000 emails.
- EmailEngine is self-hostable, according to its own site.
- Free trial · from €10,000 one-time
MailerQ
Self-hosted mail transfer agent for high-volume email sending
- MailerQ starts at €10,000 one-time per instance, plus €2,000 a year for updates and support. SMTP.com starts at $25 per month for 50,000 emails.
- MailerQ is self-hostable, according to its own site.
- MailerQ also covers inbox warm-up and dMARC.
- Free plan · from $5,000/yr
KumoMTA
Open-source mail server for high-volume, self-run email sending
- KumoMTA starts at $5,000 per billion messages per year for Silver support. SMTP.com starts at $25 per month for 50,000 emails.
- KumoMTA has a free plan. SMTP.com does not.
- Only KumoMTA lists a Linux app.
- Only SMTP.com lists a web app.
- Free plan · from $3/mo
Forward Email
Open-source email forwarding and hosting for custom domains
- Forward Email starts at $3 per month for unlimited domains. SMTP.com starts at $25 per month for 50,000 emails.
- Forward Email has a free plan. SMTP.com does not.
- Only Forward Email lists macOS, Windows, Linux, iOS and Android apps.
- Forward Email is open source and self-hostable, according to its own site.
Common questions
Is there a self-hosted alternative to SMTP.com?
Yes. useSend, Plunk, Hyvor Relay, EmailEngine, MailerQ, KumoMTA and Forward Email can be self-hosted, according to their own sites.
Can SMTP.com be self-hosted?
The SMTP.com listing does not say it can be self-hosted. The listing was checked on Oct 18, 2026 against the pages it cites.
Which of these email sending services are free?
useSend, Plunk, Hyvor Relay, KumoMTA and Forward Email are free or have a free plan.
When was this checked?
Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to SMTP.com: the alternatives its listing names first, then the tools that share the most features with it.