Description

Subscribe on Comments is an addon that adds a checkbox to the standard WordPress comment form, using comment form hooks to register the visitor as a newsletter subscriber during comment submission. In the Newsletter plugin, the add-on lets you set the checkbox as checked or unchecked, single or double opt-in mode, a welcome email, and optional lists, making it useful for blogs that want to capture readers who are already engaged in discussions.

Key Features of Subscribe on Comments

  • Checkbox in the comment
    Adds a subscription option to the standard comment form.
  • Opt-in control
    Lets you use single opt-in or force double opt-in.
  • Optional lists
    Associates new subscribers with one or more Newsletter lists.
  • Anti-spam verification
    Processes the subscription after checking for spam in WordPress.
  • Hook compatibility
    Uses standard hooks like comment_form_submit_field and comment_post.

Benefits of Subscribe on Comments

  • Contextual capture
    Converts interested commenters into subscribers of your list.
  • Less friction
    Enables subscription without taking the visitor out of the comment form.
  • Simple segmentation
    Helps classify participating readers into specific lists.
  • Preserved flow
    Keeps the normal comment submission and theme messages.

Who Is Subscribe on Comments Intended For?

  • Blogs that receive comments and want to expand their subscriber base.
  • Editorial sites that use Newsletter for email marketing and relationship building.
  • Administrators who want to capture engaged readers without creating extra forms.

How to Download Subscribe on Comments

Subscribe on Comments is available for download on this page. To put it live, go to Plugins > Add New > Upload plugin, upload the addon file, and activate it in WordPress. Keep the Newsletter plugin installed and configured before using the feature.

The Subscribe on Comments extension fits subscriber capture into a natural engagement point: comment submission. It does not replace dedicated forms or add extra fields to the comment form, but creates a direct path to turn participation into subscription, with opt-in control, lists, and basic handling for sign-ups coming from comments marked as spam.

Frequently asked questions

Is Newsletter Subscribe on Comments GPL-licensed?

Yes. Newsletter Subscribe on Comments is distributed under the GPL (GNU General Public License). You may legally use, modify and redistribute it on as many sites as you want.

Can I use Newsletter Subscribe on Comments on multiple sites?

Yes. You can install Newsletter Subscribe on Comments on as many sites as you want. Only automatic updates through Ultrapack Auto Updater have a limit: from 3 to 80 sites, depending on the plan.

How much does Newsletter Subscribe on Comments cost at Ultrapack?

Newsletter Subscribe on Comments costs US$2.99 as a single purchase, and it is also included in the subscription plans starting at US$12/mo (VIP I).

Does Newsletter Subscribe on Comments include updates?

Yes. The current version of Newsletter Subscribe on Comments is 1.2.2, published at Ultrapack on Aug 29, 2026. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).

Is Newsletter Subscribe on Comments scanned before publication?

Yes. Every version of Newsletter Subscribe on Comments goes through a malware scan (ClamAV and YARA rules, at UltraHub) before it is published.

What are the requirements for the plugin Newsletter Subscribe on Comments?

Requires WordPress 6.1 or higher and PHP 7.0 or higher. Tested up to WordPress 7.1.