by EverPress 0 (0 reviews)

Mailster SparkPost Integration

Name: Mailster SparkPost Integration
Author: EverPress

Deliver Mailster newsletters with SparkPost via WEB API or SMTP, with EU endpoint, subaccounts, and bounce syncing.

Mailster SparkPost Integration ranks #16,688 among WordPress.org plugins with 100+ active installations, is #619 of 2,802 in the Contact Forms category, and was last updated Oct 15, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v1.9.0 Current Version v1.9.0

Updated 3 weeks ago Last Update on 15 Oct, 2026

Refreshed 6 days ago Last Refreshed on

#619 of 2,802 in Contact Forms Top 25% by installs Actively maintained

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Rank

#16,688

— No change

Active Installs

100+

-17.4%

KW Avg Position

12.3

0.3 worse

Downloads

10.5K

+4 today

Support Resolved

— No change

Rating

Review 0 out of 5

0 (0 reviews)

Next Milestone 200

Total Progress 7%

100+ 200+

4,014

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #16,688

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

0.0

0 reviews

Overall 0%

0 (0%)

Security History

Source: WPVulnerability

No known vulnerabilities on record for Mailster SparkPost Integration. Checked 3 months ago.

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Plugin Details

Version: 1.9.0
Last Updated: Oct 15, 2026
Requires WP: 6.0+
Tested Up To: 7.1.4
PHP Version: N/A
Author: EverPress

Support & Rating

Rating: ☆ ☆ ☆ ☆ ☆ 0
Reviews: 0
Support Threads: 0
Resolved: 0%

Keywords

email mailster mailsteresp newsletter sparkpost

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who use the Mailster Newsletter Plugin to send email campaigns. It integrates SparkPost as the email delivery service for Mailster, requiring the Mailster Newsletter Plugin to function.

SparkPost email delivery integration
Requires Mailster Newsletter Plugin

Frequently Asked Questions

Common questions about Mailster SparkPost Integration

No. This is a delivery addon for the Mailster Newsletter Plugin and requires Mailster 4.0 or newer.

Yes. You need a SparkPost account, a verified sending domain (or verified From address), and a Master API key. SparkPost is a paid email delivery service; see SparkPost for current plans.

WEB API (recommended) sends through SparkPost’s Transmissions API and usually returns clearer errors. SMTP API relays via smtp.sparkpostmail.com (or the EU host) on port 587 or 2525 with TLS. Both are available in the SparkPost delivery settings.

Mailster needs Account read access (and related permissions) to verify the key, list sending domains and subaccounts, read message events for bounces, and send transmissions. A restricted key without those permissions will not work fully.

Yes. Choose the EU endpoint in the SparkPost delivery settings to use the EU API and SMTP hosts.

When SparkPost is the active delivery method, bounce handling is driven by SparkPost message events synced into Mailster. Mailster’s own bounce mailbox settings are ignored for this delivery method.

Yes. When this delivery method is active, Mailster sends email content and related delivery metadata to SparkPost so messages can be delivered. Bounce and engagement events are read back from SparkPost’s APIs.

For Mailster and this addon, see mailster.co and the SparkPost setup guide. For SparkPost account, billing, and API questions, use SparkPost documentation.