How Much Does Superfast Mailgun for the Newsletter plugin Slow Down WordPress? We Measured It

Superfast Mailgun for the Newsletter plugin is a WordPress plugin. A faster Mailgun add-on for The Newsletter Plugin. Very useful if you have a big mailing list. Our 3-context benchmark shows it barely registers (-5ms TTFB on activation).

B+

Measured Speed Score

How is this scored?

Our Benchmark Methodology

Every speed score on MakeWPFast is based on real performance measurements, not estimates. We install each plugin on a clean WordPress 6.9 setup (PHP 8.3, MariaDB, GeneratePress theme) and measure two key metrics:

PHP Memory Usage — how much additional memory the plugin consumes per request. Each doubling of memory overhead costs 10 points. High memory usage can cause crashes on shared hosting and limits how many plugins you can safely run together.

Database Queries — how many extra SQL queries the plugin runs per page load. Each 10x increase in query overhead costs 25 points. More queries mean more database work, slower pages, and harder scaling.

The score uses a logarithmic scale — the first few extra queries or megabytes matter more than going from 100 to 110 queries. This reflects real-world impact: the jump from 4 to 14 queries is far more noticeable than 100 to 110.

Grade	Score	What it means
A	90–100	Negligible impact. Safe to install on any hosting.
A-	80–89	Very light impact. Minimal overhead on any setup.
B+ / B / B-	65–79	Light impact. Adds some overhead but manageable on most setups.
C+ / C / C-	50–64	Moderate impact. May noticeably slow down budget hosting.
D+ / D	35–49	Heavy impact. Will affect page load times. Consider alternatives.
F	0–34	Severe impact. Significant resource usage that hurts performance.

Plugins marked "Not Yet Tested" have not been benchmarked yet. We do not estimate or guess scores — if there is no measured data, there is no grade.

Note: Benchmarks measure a plugin in isolation on a clean install. Real-world impact varies based on your hosting, other plugins, and how the plugin is configured.

Context	TTFB	Memory	Queries
⚡Activation	+-5 ms	+0 MB	+3
🏠Homepage	+-1 ms	+2 MB	+3
⚙️WP Admin	+12 ms	+2 MB	+6

Low impact

Plugin Overview

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Performance Analysis

Performance Impact

Superfast Mailgun for the Newsletter plugin receives an estimated speed score of . Our real benchmark tests measured the following impact when activating this plugin:

TTFB impact: +-5 ms
Memory impact: +0.0 MB
Additional DB queries: +3

Overall activation impact: low. This plugin adds minimal overhead to your WordPress site.

Maintenance Status

Last updated: 2026-01-22. Requires PHP 7.3+. Trusted by 10 active installations.

Benchmark data measured in an isolated Docker environment (WordPress 6.8, PHP 8.3, GeneratePress). See our full methodology.

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Alternatives to Superfast Mailgun for the Newsletter plugin

Plugin	Speed Score	Active Installs
LiteSpeed Cache	B+	7M+
Site Kit by Google	B-	5M+
Jetpack	B	3M+

Frequently Asked Questions

What's the actual cost of running Superfast Mailgun for the Newsletter plugin?

Our 2026 benchmark recorded a -5ms TTFB increase and a memory delta of around 0MB on activation. The composite speed score of B+ is based on those measurements across three contexts.

Is Superfast Mailgun for the Newsletter plugin a good fit for high-traffic WordPress sites?

Superfast Mailgun for the Newsletter plugin earned a B+ on our composite scoring. With page caching (Cloudflare, WP Rocket, LiteSpeed Cache), the -5ms TTFB delta we measured rarely shows up on cached responses — most visitors won't notice it.

Does Superfast Mailgun for the Newsletter plugin slow down WordPress?

Superfast Mailgun for the Newsletter plugin has an estimated speed score of . It may noticeably affect your site speed. Consider alternatives if performance is critical.

Is Superfast Mailgun for the Newsletter plugin still maintained?

Superfast Mailgun for the Newsletter plugin was last updated on 2026-01-22. It has 10 active installations, indicating it is a functional plugin with a dedicated user base.

What are the best alternatives to Superfast Mailgun for the Newsletter plugin?

Check our plugin reviews in the Performance category for alternatives. We compare plugins side-by-side on speed, features, and user ratings to help you find the best fit.