Description

Mailjet connects the emails generated by Newsletter to the Mailjet delivery service via API or SMTP, capturing only the messages from the base plugin and sending them through the configured provider using an API key and API secret. This addon helps sites that rely on campaigns, autoresponders, and recurring announcements centralize delivery in Newsletter, while keeping the delivery flow and bounce control within the dashboard.

Key Features of Mailjet

  • Sending via Mailjet
    Forwards Newsletter messages through the Mailjet service configured in the dashboard.
  • API or SMTP
    Allows you to configure sending using Mailjet API or standard SMTP.
  • Access keys
    Uses the API key and API secret provided by your Mailjet account.
  • Bounce detection
    Schedules a daily check of rejected emails in the Mailjet service.
  • Status in the dashboard
    Displays in the dashboard the last run of the bounce check.

Benefits of Mailjet

  • Centralized sending
    Campaigns continue in Newsletter using external delivery infrastructure.
  • Cleaner list
    Rejected addresses are marked to prevent new improper contacts.
  • Straightforward setup
    The integration uses direct credentials generated in your Mailjet account.
  • Preserved workflow
    The site keeps its already created forms, lists, and campaigns.

Who Is Mailjet Intended For?

  • WordPress sites that use Newsletter for email campaigns and announcements.
  • Administrators who want to send Newsletter messages through an external delivery service.
  • Projects that need to log bounces and reduce contacts for rejected addresses.

How to Download Mailjet

Mailjet is available for download on this page. To put it live, upload the file through the WordPress dashboard in Plugins > Add New > Upload plugin and activate the extension. Then, configure the Mailjet credentials in the corresponding dashboard.

For those who already use Newsletter as the center of campaigns, the Mailjet addon adds an external delivery layer without replacing existing lists, forms, or messages. The integration centralizes sending in the Mailjet service and keeps bounce tracking in the dashboard, creating a more controlled flow for recurring campaigns, editorial alerts, and communications with subscribers.

Frequently asked questions

Is Newsletter Mailjet GPL-licensed?

Yes. Newsletter Mailjet 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 Mailjet on multiple sites?

Yes. You can install Newsletter Mailjet 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 Mailjet cost at Ultrapack?

Newsletter Mailjet 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 Mailjet include updates?

Yes. The current version of Newsletter Mailjet is 4.3.2, published at Ultrapack on Oct 2, 2026. Subscribers update straight from the WordPress dashboard with UAU (Ultrapack Auto Updater).

Is Newsletter Mailjet scanned before publication?

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

What are the requirements for the plugin Newsletter Mailjet?

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