wp-mailster

WP Mailster

WP Mailster allows your users to be part of a group and communicate by email without having to log into a website.

30.0 opportunity score Open evidence Open API Open on WordPress.org

300active installs

31.9Kdownloads

4.9rating

0unresolved threads

5complaints analyzed

19praise analyzed

Proof Health

Open evidence

Commercial opportunities need traceable source links before they are treated as build-worthy.

101 / 101 rows with source links

100.0% of this page's analysis has direct source links.

0 build-decision rows missing links

0 rows here require auditable proof before promotion.

0 rows with no attached evidence

0 rows have source counts but still need direct links.

Download Momentum

180 days

199recent 30 days 255previous 30 days -22.0%movement 1.7Kshown total

Related Opportunities

0 markets

No opportunity report currently maps to this plugin's tags.

Source Evidence

Open evidence explorer

complaint support · high severity · relevance 1.0

Email to list failed with no error indicated

Email to list failed with no error indicated: users show security, bugs, compatibility pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Email to list failed with no error indicated An email yesterday from a member of my list came only to me, the administrator.

mixed support · high severity · relevance 0.95

Fehler mit lib/html2text/Html2Text.php

Fehler mit lib/html2text/Html2Text.php: users show bugs, compatibility, pricing pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Fehler mit lib/html2text/Html2Text.php Warning : require_once(lib/html2text/Html2Text.php): failed to open stream: No such file or directory in /homepages/18/d651346510/htdocs/bug-durmersheim.de/wp-content/plugins/wp-mailster/mailster/Factory.php on line 126 Fatal error : require_once(): Failed opening required ‘lib/html2text/Html2Text.php’ (include_path=’.:

mixed support · high severity · relevance 0.94

A possible blocklist or blacklist issue

A possible blocklist or blacklist issue: users show security, bugs, missing feature pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

A possible blocklist or blacklist issue Our ISP address at Bluehost was recently on a UCEPROTECTL3 blacklist, and I am wondering if our listserv may have done this.

mixed support · high severity · relevance 0.82

[mst_subscribe] generates critical error in version 1.8.18.0

[mst_subscribe] generates critical error in version 1.8.18.0: users show bugs, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

[mst_subscribe] generates critical error in version 1.8.18.0 Dear support team.

question support · high severity · relevance 0.77

Avoid getting flagged as spam

Avoid getting flagged as spam: users show security, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Avoid getting flagged as spam Hi, is there a way we can’t avoid being flagged as spam when we use WP MAILSTER?

praise review · high severity · relevance 0.73

Robust listserv plugin

Robust listserv plugin: users show bugs, performance, missing feature pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Robust listserv plugin Robust listserv plugin with many valuable features.

praise review · high severity · relevance 0.72

What we were looking for

What we were looking for: users show security, bugs, missing feature pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

After we changed our Webhosting Provider we suddenly faced the issue, that we produce too much emails / hour somtimes: When discussions via email come up within a group of 40 people this sums up fast and the webhosting is somewhat restrictive.

complaint support · medium severity · relevance 0.86

Plase wait xxxxxx seconds

Plase wait xxxxxx seconds: users show missing feature, pricing, setup pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Please wait xxxxxxxx seconds for the next subscription.

mixed support · medium severity · relevance 0.85

Send failed: “Could not instantiate mail function.”

Send failed: “Could not instantiate mail function.”: users show bugs, compatibility, missing feature pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

Send failed: “Could not instantiate mail function.” Dear Mailster support team, I am using your plugin since a while now with quite good success.

mixed support · medium severity · relevance 0.84

IONOS PHP 8.4 IMAP Issue

IONOS PHP 8.4 IMAP Issue: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

IONOS PHP 8.4 IMAP Issue Dear Mailster Team, when switching to PHP 8.4 under my webhoster IONOS, Mailster will no longer work as PHP IMAP extension is not installed there.

Competitor Context

0 shown

No competitor context is available for this plugin's primary market yet.

Repeated Themes

0 shown

No repeated plugin-level themes have been generated yet.

Collected Signals

20 shown from 60 collected

mixed IONOS PHP 8.4 IMAP Issue support · 2026-03-04T15:55:06+00:00 · medium severity · discussion list

IONOS PHP 8.4 IMAP Issue: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence: IONOS PHP 8.4 IMAP Issue Dear Mailster Team, when switching to PHP 8.4 under my webhoster IONOS, Mailster will no longer work as PHP IMAP extension is not installed there.

bugs compatibility support setup support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Plase wait xxxxxx seconds support · 2026-01-12T11:50:10+00:00 · medium severity · discussion list

Plase wait xxxxxx seconds: users show missing feature, pricing, setup pain that may indicate a product gap.

Evidence: Please wait xxxxxxxx seconds for the next subscription.

missing feature pricing setup form support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Email to list failed with no error indicated support · 2025-03-27T16:16:19+00:00 · high severity · discussion list

Email to list failed with no error indicated: users show security, bugs, compatibility pain that may indicate a product gap.

Evidence: Email to list failed with no error indicated An email yesterday from a member of my list came only to me, the administrator.

security bugs compatibility missing feature support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed from email address support · 2025-02-19T18:52:52+00:00 · low severity · discussion list

from email address: users show missing feature, support pain that may indicate a product gap.

Evidence: from email address The general settings on WP Mailster Version 1.8.21.0 include “From email address” and “From name.” At one time I believe setting both to Sender (name and address) rather than Mailing List caused replies to be directed to the sender.

missing feature support value support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Great support! (5 stars) review · 2024-12-03T22:25:26+00:00 · medium severity · discussion list

Great support!: users show bugs, support pain that may indicate a product gap.

Evidence: Great support!

bugs support easy support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed [mst_subscribe] generates critical error in version 1.8.18.0 support · 2024-11-30T01:01:46+00:00 · high severity · discussion list

[mst_subscribe] generates critical error in version 1.8.18.0: users show bugs, support pain that may indicate a product gap.

Evidence: [mst_subscribe] generates critical error in version 1.8.18.0 Dear support team.

bugs support reliable support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Great support – even for free version! (5 stars) review · 2024-11-08T16:09:37+00:00 · medium severity · discussion list

Great support – even for free version!: users show bugs, missing feature, pricing pain that may indicate a product gap.

Evidence: Great support – even for free version!

bugs missing feature pricing support support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint Inbox connection problem support · 2024-10-31T22:30:46+00:00 · medium severity · discussion list

Inbox connection problem: users show missing feature pain that may indicate a product gap.

Evidence: Inbox connection problem Hello, The plugin was working great for me for several years.

missing feature quality email support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed A possible blocklist or blacklist issue support · 2024-08-30T14:44:03+00:00 · high severity · discussion list

A possible blocklist or blacklist issue: users show security, bugs, missing feature pain that may indicate a product gap.

Evidence: A possible blocklist or blacklist issue Our ISP address at Bluehost was recently on a UCEPROTECTL3 blacklist, and I am wondering if our listserv may have done this.

security bugs missing feature support support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Great Mailinglist Software and helpful support (5 stars) review · 2024-04-30T08:32:58+00:00 · medium severity · discussion list

Great Mailinglist Software and helpful support: users show support, migration pain that may indicate a product gap.

Evidence: Great Mailinglist Software and helpful support I’ve been using Mailster for many years, first in Joomla and now in WordPress.

support migration reliable support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Besides the good functionality: Superb and efficient service! (5 stars) review · 2024-03-19T21:56:54+00:00 · medium severity · discussion list

Besides the good functionality: Superb and efficient service!: users show pricing, support pain that may indicate a product gap.

Evidence: Besides the good functionality: Superb and efficient service!

pricing support performance support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Send failed: “Could not instantiate mail function.” support · 2024-03-04T14:42:22+00:00 · medium severity · discussion list

Send failed: “Could not instantiate mail function.”: users show bugs, compatibility, missing feature pain that may indicate a product gap.

Evidence: Send failed: “Could not instantiate mail function.” Dear Mailster support team, I am using your plugin since a while now with quite good success.

bugs compatibility missing feature support support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

complaint WPMailster can send an alert email sends an email in the event of a problem support · 2024-01-28T21:39:06+00:00 · medium severity · discussion list

WPMailster can send an alert email sends an email in the event of a problem: users show bugs, missing feature, support pain that may indicate a product gap.

Evidence: WPMailster can send an alert email sends an email in the event of a problem Hello A request for development, feature!

bugs missing feature support email support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Nice (5 stars) review · 2024-01-17T21:22:51+00:00 · medium severity · discussion list

Nice: users show support pain that may indicate a product gap.

Evidence: Fast support.

support performance support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Adding recipients who are not WP users support · 2024-01-17T20:16:09+00:00 · medium severity · discussion list

Adding recipients who are not WP users: users show support, setup pain that may indicate a product gap.

Evidence: WP Mailster user: If you want to add WP Mailster users in bulk: please see our documentation for the CSV upload .

support setup performance support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed WordPress warning about problem WPMailster ? support · 2023-12-05T18:27:50+00:00 · medium severity · discussion list

WordPress warning about problem WPMailster ?: users show bugs, compatibility, support pain that may indicate a product gap.

Evidence: Hello WP Mailster support 🙂 For two weeks, our WordPress site has been generating a warning regarding a problem with the “WP Mailster Society” extension.

bugs compatibility support support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Best in Class (5 stars) review · 2023-10-28T03:43:01+00:00 · medium severity · discussion list

Best in Class: users show missing feature, support pain that may indicate a product gap.

Evidence: Best in Class This plugin is the best alternative one can find when “migrating” from tools like Mailman.

missing feature support quality support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

neutral Where are the alerts for the administrator based? support · 2023-10-26T20:04:06+00:00 · low severity · discussion list

Where are the alerts for the administrator based?: users show missing feature, setup pain that may indicate a product gap.

Evidence: In the global configuration of WPMailster, a “Log file warning size limit” option should warn the WP site administrator that a certain limit has been exceeded.

missing feature setup form support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

praise Best plugin for mailinglists in wordpress (5 stars) review · 2023-09-20T15:46:26+00:00 · medium severity · discussion list

Best plugin for mailinglists in wordpress: users praise easy, reliable, quality, which suggests what competitors already do well.

Evidence: Best plugin for mailinglists in wordpress Works fine, easy to use.

easy reliable quality support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin

mixed Managing one big sendout list to many subgroups support · 2023-09-12T10:19:38+00:00 · low severity · discussion list

Managing one big sendout list to many subgroups: users show compatibility, missing feature, pricing pain that may indicate a product gap.

Evidence: Managing one big sendout list to many subgroups There’s one setup I haven’t managed to get working exactly like I want it to, and I’d like to know if there’s some way to do this.

compatibility missing feature pricing setup support triage and conversation operations Evidence only

Evidence only

This row is useful source evidence, but it has not been promoted into a build-worthy commercial opportunity.

source plugin