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MailerSend alternatives: 5 apps ranked by verified data

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

Top picks

Common reasons people leave MailerSend: free plan needs a credit card and has tight daily API limits, and SMS sending only works in the US and Canada. We ranked 5 alternatives by how directly each one replaces MailerSend, then by reviews, real visits and how recently each app's facts were checked against its own website. Twilio SendGrid currently ranks first.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Twilio SendGrid logoTwilio SendGridPaid—NoWeb5 of 568.8
2Postmark logoPostmarkFree plan + paid$15 a month (Basic, 10,000 emails)NoWeb6 of 664.8
3Mailgun logoMailgunFree plan + paid$35/month for 50,000 emailsNoWeb8 of 861.8
4Resend logoResendFree plan + paid$20 a month for 50,000 emails (Pro)NoWeb6 of 659.4
5Brevo logoBrevoFree plan + paid$9 a month for 5,000 emailsNoWeb, iOS, Android5 of 550.0
  1. Twilio SendGrid logo

    1. Twilio SendGridTop pick

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

    PaidWeb

    68.8

    score / 100

    Why switch from MailerSend

    Handles very large sending volumes and adds a marketing campaign tool from the same vendor.

    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 ×0.3100
    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 Twilio SendGrid a good MailerSend 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)
  2. Postmark logo

    2. Postmark

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

    Free plan + paidWeb

    64.8

    score / 100

    Why switch from MailerSend

    Focused purely on fast transactional delivery, with separate streams for transactional and bulk mail.

    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 ×0.387
    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 MailerSend 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. Mailgun logo

    3. Mailgun

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

    Free plan + paidWeb

    61.8

    score / 100

    Why switch from MailerSend

    Developer-first email API with strong logs, routing and a separate validation product.

    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 ×0.377
    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 Mailgun a good MailerSend 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)
  4. Resend logo

    4. Resend

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

    Free plan + paidWeb

    59.4

    score / 100

    Why switch from MailerSend

    Newer developer-focused API with React Email templates and a clean dashboard.

    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 ×0.369
    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 Resend a good MailerSend 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)
  5. Brevo logo

    5. Brevo

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

    Free plan + paidWeb, iOS, Android

    50.0

    score / 100

    Why switch from MailerSend

    Transactional API bundled with marketing email, SMS and a CRM on one account.

    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 ×0.338
    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 MailerSend 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 MailerSend alternative for…

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

Twilio SendGrid logo

Best MailerSend alternative for most people

Twilio SendGrid

Handles very large sending volumes and adds a marketing campaign tool from the same vendor.

Postmark logo

Best MailerSend alternative for a free plan you can upgrade

Postmark

Focused purely on fast transactional delivery, with separate streams for transactional and bulk mail.

Brevo logo

Best MailerSend alternative for iPhone and Android

Brevo

Transactional API bundled with marketing email, SMS and a CRM on one account.

Mailgun logo

Best MailerSend alternative for working in the browser

Mailgun

Developer-first email API with strong logs, routing and a separate validation product.

MailerSend alternatives: common questions

What is the best alternative to MailerSend?

Twilio SendGrid ranks first right now. Handles very large sending volumes and adds a marketing campaign tool from the same vendor. Postmark and Mailgun follow it in our ranking.

MailerSend vs Twilio SendGrid: what's the difference?

MailerSend is free with paid plans; Twilio SendGrid is a paid product. Both run on Web.

Is MailerSend free?

MailerSend is free with paid plans. Free plan: 500 emails/month; Free trial: 14 days of Professional; Starter plan: $68/month for 100,000 emails; Nonprofit discount: 30%. Checked on MailerSend's own site, November 2026.

How much do MailerSend alternatives cost?

Verified prices for the top-ranked MailerSend alternatives: Postmark, $15 a month (Basic, 10,000 emails); Mailgun, $35/month for 50,000 emails; Resend, $20 a month for 50,000 emails (Pro); 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 MailerSend?

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

Is there an open-source alternative to MailerSend?

None of the 5 alternatives in this list is open source.

Why do people switch from MailerSend?

The complaints we hear most: free plan needs a credit card and has tight daily API limits; SMS sending only works in the US and Canada; dedicated IPs are reserved for high-volume enterprise accounts.

How is this list ranked?

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