The Mailjet alternative
with automation on every plan
Mailjet covers transactional and marketing email on monthly plans, with automation only on Premium. Plunk includes multi-step workflows on every account, bills $0.001 per email, and is open source.
How Plunk differs from Mailjet
Trigger
Contact signs up
Send email
Welcome to Acme
Delay
Wait 3 days
Automation Mailjet does not have
Build onboarding, drip and re-engagement sequences with triggers, delays and conditions. Mailjet includes automation only on its Premium plan.
October usage
- 48,210 contacts
- Free
- 10,000 emails sent
- $10.00
No capacity you do not use
Plunk bills $0.001 per email sent. Mailjet sells monthly tiers, from $9 a month for 8,000 emails or $19 for 15,000, whether you send them or not.
Open source, and yours to host
Plunk is AGPL-3.0 and runs on your own servers with Docker, or on our cloud. Mailjet is closed and cloud-only.
Which one is right for you?
Choose Plunk if
- You want onboarding and drip sequences that run on their own
- Your sending volume changes and you do not want a monthly tier
- You want open source, with the option to self-host
Choose Mailjet if
- You test campaigns with inbox previews or built-in A/B testing
- A larger free tier of 200 emails a day matters to you
- You want a long-running platform with a broad feature set
Feature by feature
| Feature | Plunk | Mailjet |
|---|---|---|
| Free tier | 1,000 emails/month | 200 emails/day (6,000/month) |
| Pricing model | Pay-as-you-go | Monthly subscription plans |
| Open source | ||
| Self-hostable | ||
| Transactional emails | ||
| Marketing campaigns | ||
| Workflow automation | Premium plan only | |
| Dynamic segmentation | Essential plan and up | |
| Event tracking | ||
| Custom domains |
Frequently asked questions
Automation on every account, no monthly plan.
Start on the free plan with 1,000 emails a month, no credit card needed. When you need more, every email is $0.001, with unlimited contacts and every feature included.