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Should I Use MailerSend?

mailersend.com·Analyzed 2 hours ago·Based on 17 sources

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

Worth it

Worth it

Buy if you're a developer or small team sending app or WordPress transactional email on a budget.

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

Confidence: Medium

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

Value for money4

5K emails ~$6.30; free tier available

Ease of use4

Reviewers call it reliable and beginner-friendly

Feature depth4

API, SMTP, SMS, verification — comprehensive for transactional

Support quality3

24/7 support promised; approval rejections handled poorly

Security posture3

Platform solid; official WordPress plugin shipped a CSRF flaw

Pros

  • Beginner-friendly, reliable transactional email per independent reviews¹
  • Competitive pricing: about $6.30/month for 5,000 emails²
  • Free tier: 500 emails/month, no commitment
  • SDKs across many languages fit existing stacks
  • 24/7 support advertised on plans16

Cons

  • Account approval can be denied without explanation12
  • Official WordPress plugin had a high-severity CSRF flaw
  • Some users left for simpler registrar-level forwarding13
  • Developers report Resend offers a cleaner API experience14
  • One MSP user sought alternatives after unresolved issues15

Gotchas

  • highWordPress plugin users must update past 1.0.8 to patch CSRF
  • mediumSign-up rejections come with no concrete feedback — have a fallback provider ready11
  • mediumProfessional plans jump to $99–110/month — steep climb from the $7 starter
  • lowFree tier caps at 500 emails/month; meaningful volume requires paying

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

Companies that use it

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.

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

Alternatives

Compare MailerSend with each alternative.

Postmark

Reddit pick for transactional email with clearer approval communication

Full analysis

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

Sources

  1. review
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  4. review
  5. review
  6. official
  7. official
  8. official
  9. security
  10. security
  11. review
  12. review
  13. review
  14. review
  15. review
  16. official
  17. review

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