$/transactional-email-api providers ↗
← Plunk
alternatives

Plunk alternatives

Providers that compete with Plunk on at least one of: Self-hosted Marketing Transactional

Open-source unified email platform.

closest matches

  1. 01

    Loops

    Marketing Transactional

    Modern lifecycle and broadcast email for SaaS.

    1,000 contacts and unlimited emails on the Free plan · $49/mo for 5,000 contacts
  2. 02

    Brevo

    Transactional Marketing

    All-in-one with a generous daily free tier.

    300/day permanent · $8/mo for 5,000 emails
  3. 03

    Customer.io

    Marketing Transactional

    Behavior-driven lifecycle messaging.

    No permanent free tier; trial only · $100/mo (Essentials)
  4. 04

    SendGrid

    Transactional Marketing

    Twilio-owned veteran with broad SDK coverage.

    60-day free trial only (permanent free tier was removed May 2025) · $19.95/mo for 50,000 emails
  5. 05

    Mailjet

    Transactional Marketing

    European-focused, GDPR-friendly all-in-one.

    6,000/mo (200/day cap) permanent · $17/mo for 15,000 emails
  6. 06

    Postal

    Self-hosted Transactional

    Open-source mail delivery platform.

    Free, self-hosted · Self-hosted only
  7. 07

    Mailchimp / Mandrill

    Marketing Transactional

    Legacy marketing giant, transactional via Mandrill.

    500 contacts, 1,000 sends/month · $13/mo Essentials
  8. 08

    Postmark

    Transactional

    Transactional-only, fast and well-delivered.

    100/mo developer plan · $15/mo for 10,000 emails
All provider alternatives →