Plunk

Open-source email platform for transactional email, marketing campaigns, and automated

Plunk sends transactional email, runs campaign broadcasts and executes event-triggered workflows from one contact list. Contacts are unlimited on all plans and billing is per email sent. The platform includes a REST API, SDKs, SMTP delivery, an MCP server for AI agents, and inbound email handling.

12 alternatives to Plunk

Ranked by how well each tool replaces Plunk: shared features, audience, price and popularity.

MailerLite
Simple and affordable email marketing solution.
Free plan
67 out of 100 matchFree
Brevo
Email, SMS and WhatsApp campaigns priced by volume
Free plan
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Acumbamail
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Free plan
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SendPulse
Multi-channel marketing automation platform combining email, SMS, web push, chatbots, CRM,
Free plan
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Sender
Email marketing platform for growing businesses.
Free plan
61 out of 100 match$6.30/mo
Flodesk
Email marketing platform with a visual design editor, workflows, forms and checkout.
Free plan
61 out of 100 match$25/mo
EnvíaloSimple
Email marketing platform with built-in AI for creating, optimizing and sending campaigns.
Free plan
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Klaviyo
Email and SMS for e-commerce brands
Free plan
60 out of 100 match$20/mo
Moosend
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Free plan
60 out of 100 matchContact sales
MailPoet
Better Email for WordPress-Powered Websites
Free plan
59 out of 100 matchFree
Mailmeteor
Send personalized emails and manage replies at scale
Free plan
59 out of 100 match$5.99/mo
EmailOctopus
Email marketing made easy
Free plan
59 out of 100 match$9/mo