Evenly matched on the points we can measure. Here's how they compare on price, features, ratings and deals.
| Feature | InboxWP | Post SMTP |
|---|---|---|
| Our score | Not rated | 8.5/10 |
| Starts at | $7.99/month | $59.99/year |
| Free version | No | Yes (better) |
| Refund window | 30 days (better) | 14 days |
| Billing | Subscription | Subscription |
| Active installs | – | 300K+ |
| Last Black Friday | – | 25% off |
| Category | Email marketing | Email marketing |
| Vendor | weDevs | Postmansmtp |
| Black Friday 2026 | Not announced | Not announced |
InboxWPInboxWPInboxWPPersonalStarts here
$7.99/month
per site sites
Agency
$15/month
10 or more sites sites
BasicStarts here
$59.99/year
Professional
$79.99/year
Business
$99.99/year
They're evenly matched on the points we can measure. Pick by features and budget.
InboxWP starts at $7.99/month and Post SMTP starts at $59.99/year.
Both are on our Black Friday tracker. Post SMTP was 25% off last year.
InboxWP sends WordPress and WooCommerce transactional emails through reliable sending servers, with DKIM, SPF and DMARC set up for your domain.
Post SMTP provides advanced email delivery solutions to ensure your emails are delivered effectively from your WordPress site.