AppBreakup
Submit an app

Plunk alternatives: 6 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rankAll transactional email services

Top picks

  • Resend logo

    Best overall

    Resend

    Starting price: $20 a month for 50,000 emails (Pro)

  • Postmark logo

    Best free option

    Postmark

    Starting price: $15 a month (Basic, 10,000 emails)

Common reasons people leave Plunk: free plan adds Plunk branding and caps monthly sends, and smaller company and ecosystem than SendGrid or Mailchimp. We ranked 6 alternatives by how directly each one replaces Plunk, then by reviews, real visits and how recently each app's facts were checked against its own website. Resend currently ranks first.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Resend logoResendFree plan + paid$20 a month for 50,000 emails (Pro)NoWeb6 of 668.8
2Postmark logoPostmarkFree plan + paid$15 a month (Basic, 10,000 emails)NoWeb6 of 661.8
3Twilio SendGrid logoTwilio SendGridPaid—NoWeb5 of 559.4
4Mailgun logoMailgunFree plan + paid$35/month for 50,000 emailsNoWeb8 of 857.5
5Loops logoLoopsFree plan + paid$49 a month (Growth, up to 5,000 contacts)NoWeb6 of 654.4
6Brevo logoBrevoFree plan + paid$9 a month for 5,000 emailsNoWeb, iOS, Android5 of 549.0
  1. Resend logo

    1. ResendTop pick

    Best for: Developers and startups who want a modern email API with React-based templates

    Free plan + paidWeb

    68.8

    score / 100

    Why switch from Plunk

    Developer-loved sending API with React Email support and a free tier.

    Pros

    • Simple REST API plus SMTP relay and official SDKs
    • React Email templates fit naturally into JavaScript codebases
    • Free plan is enough for side projects and testing
    • Transactional and broadcast email in one account

    Cons

    • Free plan is capped at 100 emails a day
    • Dedicated IPs and SSO cost extra add-ons
    • Younger service with fewer marketing features than full email marketing suites
    Visit Resend Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Resend a good Plunk alternative?

    Verified facts

    6 of 6 verified
    Free plan
    Yes, 3,000 emails a month (100 a day)
    Checked Nov 8, 2026resend.com(opens source in a new tab)
    Starting price
    $20 a month for 50,000 emails (Pro)
    Checked Nov 8, 2026resend.com(opens source in a new tab)
    Sending methods
    REST API and SMTP relay
    Checked Nov 8, 2026resend.com(opens source in a new tab)
    Free trial
    No, free-forever plan instead
    Checked Nov 8, 2026resend.com(opens source in a new tab)
    Dedicated IP
    $30/month add-on
    Checked Nov 8, 2026resend.com(opens source in a new tab)
    Scale plan
    $90 a month for 100,000 emails
    Checked Nov 8, 2026resend.com(opens source in a new tab)
  2. Postmark logo

    2. Postmark

    Best for: SaaS teams that care most about fast, reliable delivery of password resets and receipts

    Free plan + paidWeb

    61.8

    score / 100

    Why switch from Plunk

    Strong deliverability focus for transactional email, with separate streams for broadcasts.

    Pros

    • Transactional and bulk mail kept in separate streams
    • Clear published pricing with unlimited daily sending
    • Inbound email processing on the Pro tier and above
    • Searchable activity logs with adjustable retention

    Cons

    • Free plan allows only 100 emails a month
    • Less suited to large marketing newsletters
    • Fewer custom sending domains on the cheapest plan
    Visit Postmark Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Postmark a good Plunk alternative?

    Verified facts

    6 of 6 verified
    Free plan
    Yes, 100 emails a month
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
    Starting price
    $15 a month (Basic, 10,000 emails)
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
    Data retention
    45 days default, up to 365
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
    Daily limit
    Unlimited emails/day on paid plans
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
    Pro plan
    $16.50 a month (10,000 emails)
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
    Platform plan
    $18 a month (10,000 emails)
    Checked Nov 8, 2026postmarkapp.com(opens source in a new tab)
  3. Twilio SendGrid logo

    3. Twilio SendGrid

    Best for: Companies sending high volumes of app email that also want basic marketing campaigns from the same vendor

    PaidWeb

    59.4

    score / 100

    Why switch from Plunk

    Large-scale sending with mature tooling, for teams that outgrow a small provider.

    Pros

    • Handles very large sending volumes
    • REST API and SMTP relay with SDKs for most languages
    • Marketing Campaigns tool for newsletters alongside the API
    • Dedicated IPs available on higher tiers

    Cons

    • No permanent free plan; the free trial ends after 60 days
    • Marketing Campaigns is billed separately from the Email API
    • Moving the site into Twilio's has made docs and pricing harder to find
    Visit Twilio SendGrid Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Twilio SendGrid a good Plunk alternative?

    Verified facts

    5 of 5 verified
    Free trial
    100 emails/day for 60 days
    Checked Nov 8, 2026twilio.com(opens source in a new tab)
    Sending methods
    REST API or SMTP relay
    Checked Nov 8, 2026twilio.com(opens source in a new tab)
    Volume
    205+ billion emails a month
    Checked Nov 8, 2026twilio.com(opens source in a new tab)
    Uptime SLA
    99.99%
    Checked Nov 8, 2026twilio.com(opens source in a new tab)
    Marketing editor
    Drag-and-drop with templates
    Checked Nov 8, 2026twilio.com(opens source in a new tab)
  4. Mailgun logo

    4. Mailgun

    Best for: Developers who need a reliable email API with inbound routing and address validation

    Free plan + paidWeb

    57.5

    score / 100

    Why switch from Plunk

    Established email API with validation and inbound routing at high volume.

    Pros

    • Permanent free plan with 100 emails a day
    • Inbound email parsing and routing to your app
    • Email validation API from the same vendor
    • Detailed logs and deliverability tooling

    Cons

    • Free plan's daily limit only suits testing and tiny apps
    • Validation and extra emails are billed on top of the plan
    • No drag-and-drop marketing editor
    Visit Mailgun Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Mailgun a good Plunk alternative?

    Verified facts

    8 of 8 verified
    Free plan
    Yes, 100 emails/day
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Starting paid plan
    $35/month for 50,000 emails
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Extra emails
    From $1.80 per 1,000 (Basic)
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Customers
    150,000+ businesses
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Starting price
    $15/month for 10,000 emails (Basic)
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Foundation plan
    $35/month for 50,000 emails
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Scale plan
    $90/month for 100,000 emails
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
    Free trial
    1 month (Foundation and Scale)
    Checked Nov 8, 2026mailgun.com(opens source in a new tab)
  5. Loops logo

    5. Loops

    Best for: SaaS startups that want marketing and transactional email from one simple tool

    Free plan + paidWeb

    54.4

    score / 100

    Why switch from Plunk

    Product and marketing email for SaaS in one tool, with a more polished hosted editor.

    Pros

    • Marketing, product and transactional email together
    • All features on every plan
    • Easy integrations with common SaaS tools

    Cons

    • Email only, no SMS or push
    • Less advanced segmentation and reporting
    • Younger platform with a smaller ecosystem
    Visit Loops Details and reviews
    How this score is calculated
    Editorial fit ×0.352
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Loops a good Plunk alternative?

    Verified facts

    6 of 6 verified
    Free plan
    Yes, 4,000 sends per 30 days to 1,000 contacts
    Checked Nov 8, 2026loops.so(opens source in a new tab)
    Growth plan
    $49/month for up to 5,000 contacts
    Checked Nov 8, 2026loops.so(opens source in a new tab)
    Feature access
    All features on every plan
    Checked Oct 29, 2026loops.so(opens source in a new tab)
    Focus
    Email for SaaS teams
    Checked Nov 8, 2026loops.so(opens source in a new tab)
    Starting price
    $49 a month (Growth, up to 5,000 contacts)
    Checked Nov 8, 2026loops.so(opens source in a new tab)
    Enterprise plan
    Custom pricing for 1.5 million+ contacts
    Checked Nov 8, 2026loops.so(opens source in a new tab)
  6. Brevo logo

    6. Brevo

    Best for: Businesses with large contact lists that want email, SMS and a CRM in one place

    Free plan + paidWeb, iOS, Android

    49.0

    score / 100

    Why switch from Plunk

    Marketing campaigns, transactional email and SMS in one hosted suite with a free tier.

    Pros

    • Priced by emails sent, not contacts stored
    • Email, SMS, WhatsApp and transactional email together
    • Free plan with daily sending allowance

    Cons

    • Free plan has a daily send limit and branding
    • Editor and templates less polished than some rivals
    • SMS credits cost extra
    Visit Brevo Details and reviews
    How this score is calculated
    Editorial fit ×0.334
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Brevo a good Plunk alternative?

    Verified facts

    5 of 5 verified
    Free plan
    Yes, up to 300 emails per day
    Checked Nov 8, 2026brevo.com(opens source in a new tab)
    Free plan terms
    Free forever, no card needed
    Checked Nov 8, 2026brevo.com(opens source in a new tab)
    Starter volume
    From 5,000 emails per month
    Checked Nov 8, 2026brevo.com(opens source in a new tab)
    Transactional messaging
    Email, SMS and WhatsApp via SMTP and API
    Checked Nov 8, 2026brevo.com(opens source in a new tab)
    Starting price
    $9 a month for 5,000 emails
    Checked Nov 8, 2026brevo.com(opens source in a new tab)

The best Plunk alternative for…

The highest-ranked app in this list for each need.

Resend logo

Best Plunk alternative for most people

Resend

Developer-loved sending API with React Email support and a free tier.

Postmark logo

Best Plunk alternative for a free plan you can upgrade

Postmark

Strong deliverability focus for transactional email, with separate streams for broadcasts.

Brevo logo

Best Plunk alternative for iPhone and Android

Brevo

Marketing campaigns, transactional email and SMS in one hosted suite with a free tier.

Twilio SendGrid logo

Best Plunk alternative for working in the browser

Twilio SendGrid

Large-scale sending with mature tooling, for teams that outgrow a small provider.

Plunk alternatives: common questions

What is the best alternative to Plunk?

Resend ranks first right now. Developer-loved sending API with React Email support and a free tier. Postmark and Twilio SendGrid follow it in our ranking.

Plunk vs Resend: what's the difference?

Plunk is free and open source; Resend is free with paid plans. Verified prices: Plunk $0.001 per email, Resend $20 a month for 50,000 emails (Pro). Both run on Web.

Is Plunk free?

Plunk is free and open source. Free plan: 1,000 emails/month; Price: $0.001 per email. Checked on Plunk's own site, November 2026.

How much do Plunk alternatives cost?

Verified prices for the top-ranked Plunk alternatives: Resend, $20 a month for 50,000 emails (Pro); Postmark, $15 a month (Basic, 10,000 emails); Mailgun, $35/month for 50,000 emails; Loops, $49 a month (Growth, up to 5,000 contacts); Brevo, $9 a month for 5,000 emails. Each price was checked on the app's own site; see each card below for the date and source.

Is there a free alternative to Plunk?

Yes. Resend (free plan + paid), Postmark (free plan + paid), Mailgun (free plan + paid) and Loops (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Plunk?

None of the 6 alternatives in this list is open source.

Why do people switch from Plunk?

The complaints we hear most: free plan adds Plunk branding and caps monthly sends; smaller company and ecosystem than SendGrid or Mailchimp; AGPL licence can be restrictive if you modify and offer it as a service.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Plunk, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.