OptinMonster vs Post SMTP

Post SMTP wins 3 of the 4 points we can measure. Here's how they compare on price, features, ratings and deals.

At a glance

FeatureOptinMonsterPost SMTP
Our score5.1/108.5/10 (better)
Starts at$210/year$59.99/year (better)
Free versionNoYes (better)
Refund window14 days14 days
BillingSubscriptionSubscription
Active installs–300K+
Last Black Friday60% off (better)25% off
CategoryEmail marketingEmail marketing
VendorOptinMonsterPostmansmtp
Black Friday 2026Not announcedNot announced

Which should you choose?

Choose OptinMonster if…

  • Marketers growing email lists from existing traffic
  • Online stores reducing cart abandonment

Choose Post SMTP if…

  • WordPress sites where contact form and order emails must arrive
  • Site owners who want email logs and failure alerts
  • You want to start free
  • You want the lower starting price

Features

OptinMonster

  • Exit-intent popups
  • Template library
  • Page and behavior targeting
  • A/B testing
  • Coupon wheel campaigns
  • eCommerce integrations
  • Email and CRM integrations

Post SMTP

  • Email logging
  • Failure alerts
  • Many SMTP providers
  • Backup SMTP
  • Open email tracking
  • Email health report

Pros and cons

OptinMonster

  • 14-day money-back guarantee on every plan
  • 700+ templates included on all plans
  • Impression-based pricing that does not charge for page views
  • OptinMonster University training included with subscriptions
  • No free plan, only a trial with 500 impression credits
  • Renewals are billed at full price after the first year
  • Basic plan includes only simple analytics

Post SMTP

  • Free version on WordPress.org includes email logging
  • Instant failure notifications
  • Gmail and Microsoft 365 setup without manual SMTP settings
  • 14-day money-back guarantee
  • Bulk resend and advanced delivery need the Professional plan
  • MS Teams notifications and the mobile app features need the Business plan
  • Support level depends on the plan

Pricing plans

OptinMonster

  • BasicStarts here

    $210/year

    1 site

    • 2,500 impressions per month
    • 700+ templates
    • Introductory first year at $108
  • Plus

    $570/year

    2 sites

    • 10,000 impressions per month
    • A/B testing and full analytics
    • Introductory first year at $324
  • Pro

    $870/year

    3 sites

    • 25,000 impressions per month
    • Exit-intent technology and webhooks
    • Introductory first year at $444

Post SMTP

  • BasicStarts here

    $59.99/year

    • All Pro mailers
    • Gmail one-click setup
    • Standard support
  • Professional

    $79.99/year

    • Advanced email delivery
    • Resend failed emails in bulk
    • Priority support
  • Business

    $99.99/year

    • Microsoft one-click setup
    • MS Teams notifications
    • Expert live assistance

What Reddit says

OptinMonster

Reddit mentions of OptinMonster are negative, with users reporting it showing up on sites where they did not install it. One post links it to compromised sites through bundled plugins, and another says it was hard to remove once installed.

Post SMTP

Not enough Reddit discussion yet.

OptinMonster vs Post SMTP questions

Is OptinMonster better than Post SMTP?

On our comparison Post SMTP comes out ahead on 3 of 4 measurable points. The right pick still depends on what you build.

Which is cheaper, OptinMonster or Post SMTP?

OptinMonster starts at $210/year and Post SMTP starts at $59.99/year.

Can I get OptinMonster or Post SMTP cheaper on Black Friday?

Both are on our Black Friday tracker. OptinMonster was 60% off last year. Post SMTP was 25% off last year.

Both products

Post SMTP

8.5/10

Post SMTP provides advanced email delivery solutions to ensure your emails are delivered effectively from your WordPress site.

Free version
Yes
Price
From $59.99/year
Category
Email marketing

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