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SPECIFICTION
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Infobip Email API vs Plunk

Infobip Email API

infobip.com

Plunk

useplunk.com

Side by side

FigureInfobip Email APIPlunk
Price from—Free
Free plan—Yes
Free trialYes—
Open source——
WebYesYes
APIYesYes
Self-hosted—Yes
Plans published24
Spec score · Transactional email services8.5 (#12)8.1 (#23)
Spec score · Transactional Email Software8.5 (#12)7.8 (#31)
Free planNoYes
Inbound emailReplies can be received on a configured inbound domain and delivered to customer systems through webhooks.One MX record enables inbound email at the domain, with parsed message content delivered to an endpoint as JSON and inbound messages able to trigger workflows.
IntegrationsEmail is available inside Infobip Broadcast, Moments and Conversations, with web-interface and HTTP API workflows.Plunk offers a REST API, SDKs including Node.js and Python, SMTP support, webhooks, and an MCP server that works with MCP clients such as Claude Code, Claude Desktop, and Cursor.

Plans

Infobip Email API

  • Pay as you goPrice not published
  • Email API pay-as-you-goPriced on request

Infobip Email API pricing →

Plunk

  • FreeFree
  • Pay as you growFree
  • Free foreverFree
  • Pay as you growFree

Plunk pricing →

In their own words

Infobip Email API

Infobip Email API has no write-up on Specifiction yet; its figures are above.

Visit infobip.com

Plunk

Plunk has no write-up on Specifiction yet; its figures are above.

Visit useplunk.com