# Cart66 to Mailchimp vs ClassDex

> Cart66 to Mailchimp vs ClassDex compared on installs, downloads, ratings, updates, compatibility and support. ClassDex comes out ahead, winning 6 of 6 head-to-head checks against Cart66 to Mailchimp.

**ClassDex comes out ahead, winning 6 of 6 head-to-head checks against Cart66 to Mailchimp.** Choose ClassDex if you care most about downloads (30 days), download trend and reviews.

| | Cart66 to Mailchimp | ClassDex |
|---|---|---|
| Active installs | 10+ | 10+ |
| Downloads (30 days) | 72 | 86 ✅ |
| Download trend | +24.1% | +48.3% ✅ |
| Rating | — | 5/5 |
| Reviews | 0 | 3 ✅ |
| Health score | 23/100 | 30/100 ✅ |
| Last updated | 13 years ago | 12 years ago ✅ |
| Tested up to | WP 3.5.2 | WP 4.0.38 ✅ |
| Support resolved | — | — |
| Requires PHP | Any | Any |
| First released | Feb 2013 | Aug 2013 |

## Frequently asked questions

### Which is better, Cart66 to Mailchimp or ClassDex?
ClassDex comes out ahead, winning 6 of 6 head-to-head checks against Cart66 to Mailchimp.  Choose ClassDex if you care most about downloads (30 days), download trend and reviews.

### Is Cart66 to Mailchimp more popular than ClassDex?
Cart66 to Mailchimp is the more popular of the two with 10+ active installs, compared with 10+ for ClassDex.

### Can I use Cart66 to Mailchimp and ClassDex together?
Both plugins cover cart66 and mailchimp, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.

### Are Cart66 to Mailchimp and ClassDex free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.


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Source: live WordPress.org data · HTML version: https://pageforge.pro/directory/compare/cart66-to-mailchimp-vs-classdex/ · Generated 2026-10-10 09:26 UTC by PageForge