Mailster is an easy to use Email Newsletter Plugin for WordPress.
- Free version
- No
- Price
- From $39/year
- Category
- Email marketing
Not announcedBlack Friday deal for Mailster
Mailster vs Post SMTP
Post SMTP wins 2 of the 3 points we can measure. Here's how they compare on price, features, ratings and deals.
At a glance
| Feature | Mailster | Post SMTP |
|---|---|---|
| Our score | 6.7/10 | 8.5/10 (better) |
| Starts at | $39/year (better) | $59.99/year |
| Free version | No | Yes (better) |
| Refund window | 14 days | 14 days |
| Billing | Subscription | Subscription |
| Active installs | – | 300K+ |
| Last Black Friday | – | 25% off |
| Category | Email marketing | Email marketing |
| Vendor | Mailster | Postmansmtp |
| Black Friday 2026 | Not announced | Not announced |
Which should you choose?
Choose Mailster if…
- WordPress sites that send newsletters and drip campaigns
- Sites with large subscriber lists on a flat plan
- You want the lower starting price
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
Features
Mailster
- Unlimited subscribers, lists and forms
- Automations
- RSS and post-based campaigns
- Send through any email provider
- Advanced segmentation
- Campaign reports
Post SMTP
- Email logging
- Failure alerts
- Many SMTP providers
- Backup SMTP
- Open email tracking
- Email health report
Pros and cons
Mailster
- Unlimited subscribers and lists on all plans
- 14-day free trial and 14-day money-back guarantee
- Sends through any email provider
- Public archive of past newsletters and 400 free and premium templates
- No free version
- Starter plan includes only 3 automations
- Automation count limits the Professional plan to 10, with unlimited automations only on Agency
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
Mailster
StarterStarts here
$39/year
1 site/domain sites
- Unlimited subscribers
- 3 automations
- 10 prechecks per month
Professional
$49/year
1 site/domain sites
- 10 automations
- 100 prechecks per month
- 7 premium email templates
Agency
$99/year
1 site/domain sites
- Unlimited automations
- 1000 prechecks per month
- 7 premium email templates
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
Mailster
Reddit users discussing Mailster raise concerns about the plugin since its acquisition, including a lifetime license holder who says it has changed and that third-party templates are being abandoned. Others call it highly recommended for automation and segmentation, but ask whether it is still a good choice.
Post SMTP
Not enough Reddit discussion yet.
Mailster vs Post SMTP questions
Is Mailster better than Post SMTP?
On our comparison Post SMTP comes out ahead on 2 of 3 measurable points. The right pick still depends on what you build.
Which is cheaper, Mailster or Post SMTP?
Mailster starts at $39/year and Post SMTP starts at $59.99/year.
Can I get Mailster or Post SMTP cheaper on Black Friday?
Both are on our Black Friday tracker. Post SMTP was 25% off last year.
Both products
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
Not announcedBlack Friday deal for Post SMTP