Active installations100Adoption metric — not a quality score
WordPress.org ratingNo WordPress.org ratings yet
Official packageDirect from WordPress.org
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WP PlugIndex currently records Mailster SparkPost Integration version 1.9.0 as active, updated 18d ago and tested up to WordPress 7.1.
Overview
About this plugin
Mailster SparkPost Integration connects SparkPost to the Mailster Newsletter Plugin for WordPress so you can send campaigns and transactional mail through SparkPost instead of your web host’s mail server.
Use it when you want scalable newsletter delivery on SparkPost while keeping Mailster’s campaign editor, lists, and automation.
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0 or newer and a SparkPost account with a Master API key and a verified sending domain. When SparkPost is the active delivery method, outgoing email content and delivery metadata are sent to SparkPost (US or EU API, depending on your endpoint setting).
Why send Mailster newsletters with SparkPost?
SparkPost delivery for Mailster — Registers SparkPost as a delivery method under Newsletter → Settings → Delivery.
WEB API or SMTP API — Send via the SparkPost Transmissions (WEB) API (recommended), or use SparkPost SMTP with TLS on port 587 or 2525.
US or EU endpoint — Choose the default SparkPost API/SMTP hosts or the EU endpoint ( api.eu.sparkpost.com / smtp.eu.sparkpostmail.com ).
API key verification — Verifies your Master API key against the SparkPost account and can sync Mailster’s send limit from SparkPost usage.
Sending domains and subaccounts — Lists verified sending domains and optional SparkPost subaccounts from your account.
Open and click tracking in SparkPost — Optionally enable SparkPost open/click tracking (account defaults, none, opens, clicks, or both).
IP pool and tags — Set a dedicated IP pool ID and comma-separated tags attached to each transmission.
Bounce and complaint sync — Reads SparkPost message events and applies bounces, complaints, and unsubscribes in Mailster (SparkPost handles soft delays).
How it works
Install and activate Mailster SparkPost Integration alongside Mailster 4.0+.
Create a SparkPost account, verify your sending domain (DNS), and create a Master API key with permissions for Account, Message Events, Sending Domains, Subaccounts, Transmissions, and (if using SMTP) Send via SMTP.
Open Newsletter → Settings → Delivery, select the SparkPost tab, enter your API key, choose the endpoint if needed, and save.
Select WEB API or SMTP, configure tracking, IP pool, and tags if desired, then send a test email from a verified From domain.
Run your Mailster campaigns through SparkPost.
Setup walkthrough: Send your newsletters via SparkPost.
WordPress.org metadata
Plugin tags
Topics listed for this plugin in the WordPress.org directory.
email
mailster
mailsteresp
newsletter
sparkpost
Compatibility & maintenance
Compatibility & maintenance
Tested with WP 7.1
Marked as tested with the current WordPress 7.1 release.
Current WordPress releaseWordPress 7.1
WordPress.org Tested up to7.1
Minimum requirementsWordPress 6.0 · PHP not listed
Update activity15 Oct 202618d ago
“Tested up to” is directory metadata supplied by the plugin author. WP PlugIndex does not turn an older declaration into a claim that the plugin is incompatible.
Changes recorded by WP PlugIndex
Recent tracked changes
WordPress compatibility6.8.8→7.1.3
Tracking & source
WP PlugIndex tracks public WordPress.org directory metadata and records selected version, compatibility and availability changes as they are detected.
