Choose Mailtrap if you need
- SOC 2, ISO 27001 or SSO. We haven't found them on Plunk's website.
At a glance
- Both have a free plan.
- Mailtrap's lowest paid plan is Basic at $15 per month for 10,000 emails, as of October 20, 2026.
- Both are available on API and SMTP.
- Both list GDPR.
- Only Mailtrap lists SOC 2, ISO 27001 and SSO.
- Both have a public API.
From each tool's own website, checked on the dates below, and from published reviews.
Which to choose
From the facts checked for both tools, not from opinion. A fact we haven't confirmed for one of them is never counted.
Choose Plunk if you need
No checked fact sets Plunk apart from Mailtrap yet.
Mailtrap
Nobody has reviewed Mailtrap yet. Its rating shows once it has 3 reviews.
Review Mailtrap
Plunk
Nobody has reviewed Plunk yet. Its rating shows once it has 3 reviews.
Review PlunkThe facts
- What it does
- MailtrapModern email delivery for developer and product teams
- PlunkTransactional email, marketing campaigns, and automated workflows, all against one contact list
- Free plan
- MailtrapYes
- PlunkYes
- Pricing
- MailtrapNot confirmed
- PlunkNot confirmed
- Paid plans from
- MailtrapBasic: $15 per month for 10,000 emails
- PlunkNot confirmed
- Plans
- MailtrapFree: $0 Basic: $15 Business: $85 Enterprise: $750 As of October 20, 2026
- PlunkPay as you grow: $0.001 As of October 20, 2026
- Platforms
- MailtrapAPI, SMTP
- PlunkAPI, SMTP
- Works with
- MailtrapSupabase
- PlunkNot confirmed
- Main features
- MailtrapEmail API and SMTP, Email Sandbox, Email Marketing, Bulk stream, Dedicated IPs
- PlunkTransactional email, Dynamic segments, MCP server
- Security and compliance
- MailtrapSOC 2, ISO 27001, GDPR, SSO
- PlunkGDPR
- Public API
- MailtrapYes
- PlunkYes
- On askusers
- MailtrapNot claimed by its team yet
- PlunkNot claimed by its team yet
Mailtrap: Facts from mailtrap.io, checked October 20, 2026. Sources: mailtrap.io, mailtrap.io/pricing, mailtrap.io/pricing.md, mailtrap.io/security-and-compliance, docs.mailtrap.io/llms.txt.
Plunk: Facts from useplunk.com, checked October 20, 2026. Sources: useplunk.com, useplunk.com/pricing, docs.useplunk.com, docs.useplunk.com/self-hosting/introduction.
Prices change, so confirm on their sites.
What they share
From the platforms and integrations each website lists.
Platforms
Both
- API
- SMTP
Only MailtrapNothing else listed
Only PlunkNothing else listed
People who switched
Reviewers who say they used one of these before the other.
No reviewer has said they moved between Mailtrap and Plunk yet.
Used either of them?
Your review makes this comparison better for the next person. Review Mailtrap or review Plunk.