| #1 | Newsletter – Send awesome emails from WordPress | 24 | 899 | 2,230 | 200k+ | | | Non-prefixed global variable |
| #2 | User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder | 24 | 667 | 3,385 | 50k+ | | | Non-prefixed global variable |
| #3 | Subscribe2 – Form, Email Subscribers & Newsletters | 24 | 32 | 686 | 10k+ | | | Non-prefixed global variable |
| #4 | Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction | 21 | 1,953 | 5,297 | 10k+ | | | Non-prefixed hook name |
| #5 | WCFM Membership – WooCommerce Memberships for Multivendor Marketplace | 22 | 559 | 675 | 10k+ | | | Non-prefixed global variable |
| #6 | WP Subscribe | 29 | 79 | 79 | 7k+ | | | Non-prefixed class |
| #7 | Subscribe to Comments | 36 | 129 | 163 | 10k+ | | | Output is not escaped |
| #8 | Hostinger Reach – AI-Powered Email Marketing for WordPress | 40 | 9 | 49 | 1m+ | | | Direct Query |
| #9 | codoc | 40 | 19 | 39 | 2k+ | | | Request data is not unslashed |
| #10 | Comment Notifier | 48 | 10 | 55 | 400 | | | Non-prefixed global variable |
| #11 | Subscriptions & Memberships for PayPal | 38 | 73 | 237 | 900 | | | Request data is not unslashed |
| #12 | Recurring PayPal Donations | 41 | 48 | 47 | 800 | | | Text Domain Mismatch |
| #13 | SiteGround Email Marketing | 88 | 18 | 75 | 1k+ | | | Non-prefixed namespace |
| #14 | Subscribe to Unlock Lite – Opt In Content Locker Plugin for WordPress | 35 | 106 | 145 | 500 | | | Non-prefixed global variable |
| #15 | WP Subscription Forms – Subscription Form Plugin for WordPress | 34 | 131 | 220 | 400 | | | Non-prefixed global variable |
| #16 | Paystack MemberPress | 40 | 71 | 76 | 400 | | | Output is not escaped |
