| #1 | SiteGround Email Marketing | 88 | 18 | 75 | 2k+ | | | Non-prefixed namespace |
| #2 | Comment Notifier | 49 | 9 | 55 | 400 | | | Non-prefixed global variable |
| #3 | Recurring PayPal Donations | 41 | 48 | 47 | 800 | | | Text Domain Mismatch |
| #4 | codoc | 40 | 19 | 39 | 2k+ | | | Request data is not unslashed |
| #5 | Paystack MemberPress | 40 | 71 | 76 | 300 | | | Output is not escaped |
| #6 | Hostinger Reach – AI-Powered Email Marketing for WordPress | 39 | 12 | 51 | 1m+ | | | Direct Query |
| #7 | Subscriptions & Memberships for PayPal | 38 | 73 | 237 | 900 | | | Request data is not unslashed |
| #8 | Subscribe to Comments | 36 | 129 | 163 | 10k+ | | | Output is not escaped |
| #9 | Subscribe to Unlock Lite – Opt In Content Locker Plugin for WordPress | 35 | 106 | 145 | 500 | | | Non-prefixed global variable |
| #10 | WP Subscription Forms – Subscription Form Plugin for WordPress | 34 | 131 | 220 | 400 | | | Non-prefixed global variable |
| #11 | WP Subscribe | 29 | 79 | 79 | 7k+ | | | Non-prefixed class |
| #12 | Subscribe2 – Form, Email Subscribers & Newsletters | 26 | 18 | 686 | 10k+ | | | Non-prefixed global variable |
| #13 | Newsletter – Send awesome emails from WordPress | 24 | 892 | 2,235 | 200k+ | | | Non-prefixed global variable |
| #14 | User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder | 24 | 675 | 3,406 | 50k+ | | | Non-prefixed global variable |
| #15 | WCFM Membership – WooCommerce Memberships for Multivendor Marketplace | 22 | 551 | 642 | 10k+ | | | Non-prefixed global variable |
| #16 | Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction | 21 | 1,994 | 5,331 | 10k+ | | | Non-prefixed hook name |
