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MailerSend Review

Worth it

Should I use MailerSend?

Start sending emails with our top-rated service. Sign up for free now to streamline your email sending process with API or SMTP. - mailersend.com

· 1 month ago

Buy if you're a developer or small team sending app or WordPress transactional email on a budget. Skip it if you need marketing newsletters or can't risk an unexplained account rejection.

Confidence

Medium. Based on 17 public sources: independent reviews, official pricing pages, Reddit/HN threads, and CVE databases.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support quality
  • Security posture

Pricing

$0

Free

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Starter$7/mo
Professional$99–110/mo

Best for

  • Developers adding transactional email APIs
  • WordPress sites needing SMTP relay
  • Budget-conscious SaaS teams
  • Startups starting on the free tier

Not for

  • Marketing newsletter senders
  • Buyers who can't tolerate opaque onboarding
  • Self-hosters avoiding third-party senders
  • Devs prioritizing developer-experience polish over price

Gotchas - check before you buy

high

WordPress plugin users must update past 1.0.8 to patch CSRF

medium

Sign-up rejections come with no concrete feedback — have a fallback provider ready

medium

Professional plans jump to $99–110/month — steep climb from the $7 starter

low

Free tier caps at 500 emails/month; meaningful volume requires paying

Pros and cons

Pros

  • Beginner-friendly, reliable transactional email per independent reviews
  • Competitive pricing: about $6.30/month for 5,000 emails
  • Free tier: 500 emails/month, no commitment
  • SDKs across many languages fit existing stacks
  • 24/7 support advertised on plans

Cons

  • Account approval can be denied without explanation
  • Official WordPress plugin had a high-severity CSRF flaw
  • Some users left for simpler registrar-level forwarding
  • Developers report Resend offers a cleaner API experience
  • One MSP user sought alternatives after unresolved issues

Sources & method

- 17 sources - Core platform looks solid; the official WordPress SMTP plugin had a fixed CSRF vulnerability.

official x4review x11security x2
  • CVE-2026-13156 — CSRF in official WordPress SMTP plugin, Plugin before 1.0.8 skips a nonce check, enabling settings deletion via cross-site request forgery; fixed in 1.0.8.

Key stats

  • Value for money: 4/5

    Rating

  • $0

    Starting price

  • 17

    Sources

  • Analyzed

  • Value for money: 4/5. 5K emails ~$6.30; free tier available
  • Ease of use: 4/5. Reviewers call it reliable and beginner-friendly
  • Feature depth: 4/5. API, SMTP, SMS, verification — comprehensive for transactional
  • Support quality: 3/5. 24/7 support promised; approval rejections handled poorly
  • Security posture: 3/5. Platform solid; official WordPress plugin shipped a CSRF flaw
  • 4/5 Trustpilot rating Trustpilot reviews
  • $7/mo Starting price 5,000 emails/month
  • Yes Free tier 500 emails/month
  • 46 G2 review count Filterable by size and role

Pricing

Free

$0

  • 500 emails/month
  • 14-day full-feature trial

Starter

$7/mo

  • 5,000 emails/month
  • About $6.30/month cited in reviews

Professional

$99–110/mo

  • Higher volume allowances
  • $99/month billed annually

Security

Core platform looks solid; the official WordPress SMTP plugin had a fixed CSRF vulnerability.

  • CVE-2026-13156 — CSRF in official WordPress SMTP pluginPlugin before 1.0.8 skips a nonce check, enabling settings deletion via cross-site request forgery; fixed in 1.0.8.⁹

What users say

Reviewers praise easy setup and low prices, but Reddit users complain about opaque sign-up rejections and some churn to simpler options.

“It's disappointing that MailerSend didn't give me any concrete feedback”
Reddit, r/Wordpress
“I used MailerSend afterwards, and my approval got denied too. I appealed”
Reddit, r/AskProgramming
“So I switched back to my registrar's free email forwarding”
Hacker News

Companies that use it

Full analysis

Based on 17 public sources: independent reviews, official pricing pages, Reddit/HN threads, and CVE databases.

Cheap, easy transactional email (free 500/mo; ~$7 per 5K); great for devs and WordPress — but approvals can be denied without explanation.

Methodology

Based on 17 public sources: independent reviews, official pricing pages, Reddit/HN threads, and CVE databases.

Read how a report is made.

Sources

  1. MailerSend Review 2026: Is It Worth It for WordPress?wpmailsmtp.com
    review
  2. MailerSend Review 2026: I Tested Its API, SMTP & Moreemailvendorselection.com
    review
  3. MailerSend Reviews 2026 - G2g2.com
    review
  4. MailerSend Software Pricing, Alternatives & More - Capterracapterra.com
    review
  5. MailerSend, Inc. Reviews - Trustpilottrustpilot.com
    review
  6. MailerSend pricing - MailerLitemailerlite.com
    official
  7. Plans, features and limits - MailerSend Helpmailersend.com
    official
  8. MailerSend Product security pagemailersend.com
    official
  9. CVE-2026-13156 - CVE Recordcve.org
    security
  10. MailerSend Official SMTP Integration <= 1.0.7 - CSRF - Wordfencewordfence.com
    security
  11. MailerSend vs Postmark - Reddit r/Wordpressreddit.com
    review
  12. SendGrid/MailerSend - failed sign-up - Reddit r/AskProgrammingreddit.com
    review
  13. I recently switched over to MailerSend - Hacker Newsnews.ycombinator.com
    review
  14. Email sender services - Reddit r/webdevreddit.com
    review
  15. Looking for alternative to MailerSend - Reddit r/mspreddit.com
    review
  16. MailerSend - Transactional email service that keeps it Lite - MailerLitemailerlite.com
    official
  17. MailerSend review, pricing, features and alternatives - Grougrouglobal.com
    review

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