Newsletter API v1 and v is a developer-focused extension that enables seamless integration between external systems and the core Newsletter plugin through a RESTful interface. This technical bridge allows for server-to-server data exchange and complex list management. Developers use this interface to synchronize subscriber data across platforms without manual export and import processes.
WPExclusive members get access to Newsletter API as part of a full plugin and theme library — plans from $9.99/month. See the full Newsletter collection →
What Is Newsletter API v1 and v?
Newsletter API v1 and v is developed by Newsletter and is an email plugin for WordPress. It belongs to the email category on WPExclusive, alongside other tools for professional communication. The extension provides the necessary endpoints for remote applications to communicate with the WordPress database securely.
It solves the challenge of cross-platform synchronization by exposing subscriber lists, newsletter archives, and status controls to external tools. This is primarily built for developers who need to connect a CRM, custom mobile app, or external web service to their website’s email marketing database.
Newsletter API v1 and v Features
The technical feature set is built around providing flexible REST endpoints for complete programmatic control over email marketing workflows.
Subscriber and List Management
The plugin provides dedicated endpoints for creating, updating, or deleting subscribers. Developers can utilize the POST, PUT, and DELETE methods to manage records server-to-server. This includes the ability to set private list associations and modify profile fields directly from external software. This is a critical component for automation workflows involving external CRMs.
Authentication and Security
Security is handled via authentication keys required for most sensitive API calls. This ensures that only authorized external servers can access or modify your subscriber data. Newsletter API includes specific built-in controls for testing on localhost environments without HTTPS by adjusting the wp-config file, though production environments always recommend encrypted pathways.
Content Delivery and Archives
Beyond subscriber data, the plugin exposes the ‘newsletters’ endpoint to retrieve details on campaigns already sent. This allows for the creation of off-site newsletter archives or public displays of recently dispatched content. By default, the API returns the last 10 completely sent newsletters with support for pagination and privacy filters.
Pricing
Check current pricing on the Newsletter API sales page — WPExclusive members access it as part of their plan.
| Plan | Price | Sites | Includes |
|---|---|---|---|
| WPExclusive Membership | From $9.99/month | Unlimited | Newsletter API + full library |
For developers managing multiple sites, a WPExclusive membership covers Newsletter API plus hundreds of other plugins and themes — usually less than one premium license.
Latest Version
The plugin receives regular updates to maintain compatibility with the core REST framework. Version 2 is the current focus, offering more flexibility than the legacy version 1. WPExclusive updates plugin files promptly after each release.
How to Install
- Download the Newsletter API .zip from your WPExclusive member account
- In WordPress: Plugins → Add New → Upload Plugin
- Select the .zip and click Install Now → Activate
- Navigate to the Newsletter settings panel to generate your API keys
- Copy the generated authentication key for your server-to-server calls
Use Cases
CRM Coordination
Synchronize your WordPress subscribers with external CRM software via the /subscribers endpoint. This ensures that every new lead captured in your sales pipeline is automatically added to your email marketing lists without manual intervention.
Custom Mobile App Integration
Build custom signup forms inside mobile applications. By utilizing the subscriptions endpoint with the POST method, apps can trigger the standard subscription process, including activation emails and spam checks, directly from a device.
Agencies and Developers Managing Multiple Client Sites
Agencies can use WPExclusive to deploy the API across an unlimited number of client installations. This allows for unified reporting or cross-site data management at a fraction of the cost of individual site licenses.
Pros and Cons
✅ Strengths
- Complete CRUD operations for subscriber management
- Supports both modern REST v2 and legacy v1 structures
- Server-to-server data exchange requires no public-facing API keys
⚠️ Limitations
- Public client-to-server profile updates are currently not supported
- The plugin requires a separate free addon to be active alongside the core
- Developer auto-updates require an active license key. WPExclusive publishes updates manually when new versions are released.
Is Newsletter API v1 and v GPL Licensed?
Yes. Newsletter API v1 and v is distributed under the GNU General Public License (GPL) — the same license that governs WordPress itself. GPL gives any user the legal right to use, study, share, and redistribute the software. This is the legal framework that makes WPExclusive’s membership model possible.
WPExclusive distributes 100% original, unmodified files — the same release the developer publishes. No injected code, no alterations, no security risks.
Get Newsletter API v1 and v on WPExclusive
WPExclusive membership starts at $9.99/month, $87/year, or $149 lifetime — giving you Newsletter API v1 and v plus every plugin and theme in the library, on unlimited sites.
Explore the full Newsletter collection → or browse all WordPress plugins →
Frequently Asked Questions
What does Newsletter API v1 and v do?
Newsletter API v1 and v is an email plugin used to bridge external software with the WordPress-based Newsletter plugin. It allows developers to perform subscriber updates, list management, and content retrieval via REST calls.
Is Newsletter API v1 and v free?
While the core Newsletter plugin is free, the advanced API features are often part of the premium addon suite. Via WPExclusive, you can access it starting at $9.99/month.
What is the latest version of Newsletter API v1 and v?
The plugin is actively maintained — WPExclusive members always receive the most current release.
How much does Newsletter API v1 and v cost?
Retail pricing varies as part of the Newsletter plugin premium plans. Via WPExclusive, it is included in plans from $9.99/month.
Is it legal to use Newsletter API v1 and v via WPExclusive?
The plugin is GPL licensed, which explicitly permits redistribution. WPExclusive provides original, unmodified files — fully within GPL terms.
Can I test Newsletter API on a local server?
Yes, Newsletter API allows for local testing without HTTPS by defining a specific constant in your wp-config.php file, which is helpful for local development cycles.
