MailOptin vs Post SMTP

Post SMTP wins 2 of the 2 points we can measure. Here's how they compare on price, features, ratings and deals.

At a glance

FeatureMailOptinPost SMTP
Our score8.5/108.5/10
Starts at$99/year$59.99/year (better)
Free versionYesYes
Refund window14 days14 days
BillingSubscriptionSubscription
Active installs10K+300K+ (better)
Last Black Friday–25% off
CategoryEmail marketingEmail marketing
VendorMailOptinPostmansmtp
Black Friday 2026Not announcedNot announced

Which should you choose?

Choose MailOptin if…

  • WordPress sites building an email list
  • Site owners who want popups and an autoresponder in one plugin

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 the lower starting price

Features

MailOptin

  • Lead generation
  • Email automation
  • Exit intent
  • Targeted campaigns
  • A/B testing
  • Built-in analytics

Post SMTP

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

Pros and cons

MailOptin

  • Free version available on WordPress.org with 10,000+ active installations
  • Lifetime Pro option at 999 with no annual renewals
  • 14-day money-back guarantee on paid plans
  • Built-in A/B testing and analytics for opt-in forms
  • Only 3 verified G2 reviews, so little review data to compare
  • Works with WordPress only, not WordPress.com plans without custom plugin support
  • Paid plans start at 99 per year for one site

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

MailOptin

  • StandardStarts here

    $99/year

    1 site sites

    • Lead generation
  • Pro

    $289/year

    3 sites sites

    • Lead generation
    • Email automation
    • Newsletters
  • Agency

    $499/year

    Unlimited sites

    • Lead generation
    • Email automation
    • Newsletters

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

MailOptin vs Post SMTP questions

Is MailOptin better than Post SMTP?

On our comparison Post SMTP comes out ahead on 2 of 2 measurable points. The right pick still depends on what you build.

Which is cheaper, MailOptin or Post SMTP?

MailOptin starts at $99/year and Post SMTP starts at $59.99/year.

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

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

Both products

MailOptin

8.5/10

Convert website visitors into subscribers and WordPress users, send one-off newsletters, and create automated, event-triggered follow-up emails.

Free version
Yes
Price
From $99/year
Category
Email marketing

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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