Skip to content
ToolGPA

Alternatives · Email Sending

Courier alternatives

As of Nov 13, 2026, the best Courier alternative for most people is Resend (2.6 GPA), first in our ranking of email sending services. It's also the best free one.

Courier compared with 5 alternatives: Knock, Novu, Twilio SendGrid, Mailgun and Resend.

Courier has a free plan. 4 of the 5 alternatives are free or have a free plan. One more offers a free trial.

Listings checked up to Nov 13, 2026 · Where the facts come from

Black Friday: is there a Courier sale?

At a glance

ToolPriceFree planRuns on
CourierThis toolFree planYesWeb
KnockFree plan · from $250/moYesWeb
NovuFree plan · from $30/moYesWeb
Twilio SendGridFree trial · from $19.95/moTrial onlyWeb
MailgunFree plan · from $15/moYesWeb
ResendFree plan · from $20/moYesWeb

How each one differs from Courier

  1. Knock

    Cross-channel notification and messaging workflows for products

    • Knock starts at $250 per month, plus usage beyond 50,000 messages.
    • Knock does not cover chatbots, which Courier does.

    Suits: Product teams that want one workflow layer across email, in-app, push, SMS and chat

    Knock vs CourierKnock pricing and details

  2. Novu

    Open-source notification infrastructure for apps and agents

    • Novu starts at $30 per month for 30,000 workflow runs.
    • Novu is open source, according to its own site.
    • Novu does not cover chatbots, which Courier does.

    Suits: Developers adding an in-app inbox plus email and push to a product

    Novu vs CourierNovu pricing and details

  3. Twilio SendGrid

    Twilio's email API and SMTP service, priced by monthly email volume

    • Twilio SendGrid starts at $19.95 per month for 50,000 emails.
    • Twilio SendGrid has no free plan, only a free trial, unlike Courier.
    • Twilio SendGrid also covers email verification.
    • Twilio SendGrid does not cover workflow automation and chatbots, which Courier does.

    Suits: Developers adding transactional email to an app

    Twilio SendGrid vs CourierTwilio SendGrid pricing and details

  4. Mailgun

    Email API and SMTP relay for developers, with list validation

    • Mailgun starts at $15 per month for 10,000 emails.
    • Mailgun also covers email verification.
    • Mailgun does not cover workflow automation and chatbots, which Courier does.

    Suits: Developers sending and receiving email from an app

    Mailgun vs CourierMailgun pricing and details

  5. Resend

    Developer email API with React Email templates and a free tier

    • Resend starts at $20 per month for 50,000 emails, billed monthly.
    • Resend also covers email campaigns.
    • Resend does not cover workflow automation and chatbots, which Courier does.

    Suits: Developers building with Node.js, Next.js or React

    Resend vs CourierResend pricing and details

Limits worth knowing in Courier

  • The Business plan has no monthly fee and charges $0.005 per send, with AI Translations, the AI node and EU data residency.
  • The Developer plan stops at 10,000 sends a month.
  • The Device Preview add-on is from $20 a month.
  • Courier routes through your own email provider rather than delivering the mail itself.
Courier pricing and details

Common questions

What are the alternatives to Courier?

The alternatives to Courier in this directory are Knock, Novu, Twilio SendGrid, Mailgun and Resend. Each one has a side-by-side comparison with Courier.

Is there a free alternative to Courier?

Yes. Knock, Novu, Mailgun and Resend have a free plan alongside paid ones.

Is there an open-source alternative to Courier?

Novu is described as open source on its own site.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.