Title: WP Mailster
Author: brandtoss
Published: <strong>1 جنوري 2017</strong>
Last modified: 20 مارچ 2026

---

پلگ انس ڳولھيو

![](https://ps.w.org/wp-mailster/assets/banner-772x250.png?rev=1580666)

![](https://ps.w.org/wp-mailster/assets/icon-128x128.png?rev=1580666)

# WP Mailster

 کان: [brandtoss](https://profiles.wordpress.org/brandtoss/)

[ڊائون لوڊ ڪريو](https://downloads.wordpress.org/plugin/wp-mailster.1.8.23.0.zip)

 * [تفصيل](https://snd.wordpress.org/plugins/wp-mailster/#description)
 * [جائزو](https://snd.wordpress.org/plugins/wp-mailster/#reviews)
 * [ترقي](https://snd.wordpress.org/plugins/wp-mailster/#developers)

 [سھائتا](https://wordpress.org/support/plugin/wp-mailster/)

## وضاحت

**True two-way group communication over email**

[WP Mailster](https://wpmailster.com/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description)
allows your users to be part of a group and communicate by email without having 
to log into a website.
 Similar to programs like Mailman or Listserv this plugin
allows you to run a discussion mailing list.

That means that every email sent to a central email address is forwarded to the 
rest of the members of the list.

When members reply to such list emails WP Mailster again forwards them to the other
list recipients.
 Unlike newsletter plugins this allows true two-way communication
via email.

### Features

 * group communication through email
 * usable with any POP3/IMAP email account
 * recipients can be managed in the WordPress admin area
 * users can subscribe/unsubscribe through widgets on the website
 * all WP users can be chosen as recipients, additional recipients can be stored(
   without having to create them as WP users)
 * users can be organized in groups
 * single users or whole groups can be added as recipients of a mailing list
 * replies to mailing list messages can be forwarded to all recipients (or only 
   the sender)
 * email archive for browsing the mails
 * full support of HTML emails and attachments
 * custom headers and footers
 * subject prefixes
 * many [more features](https://wpmailster.com/feature-comparison/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description)

> **Note**: This version of WP Mailster is FREE and limited in terms of number of
> lists and subscribers per list. Additional features such as captcha protection,
> double opt-in, email filtering, configurable event notifications, and many others
> are available in the **[premium editions](https://wpmailster.com/pricing/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description)**.

### Help & Support

Please check the [documentation on our site](https://wpmailster.com/documentation/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description)
as well as look through the [FAQs](https://wpmailster.com/faq/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description)
before [contacting us](https://wpmailster.com/contact/?utm_source=wordpress.org&utm_medium=referral&utm_campaign=WPMST&utm_content=plugin+repo+description).
Thank you!

### Special Thanks

This plugin has been tested on various browsers thanks to [BrowserStack](https://www.browserstack.com/)!

## تصوير

 * [[
 * The dashboard provides an overview of the overall status (mailing list, #emails
   etc.)
 * [[
 * All emails (that are forwarded to the subscribers) are also stored in an email
   archive in the admin section
 * [[
 * Mailing list settings, general settings
 * [[
 * Mailing list settings, mailbox (incoming email)
 * [[
 * Mailing list settings, mailbox: choose from some pre-configured servers or use
   your own (what most users do)
 * [[
 * Mailing list settings, sender settings (outgoing email)
 * [[
 * Mailing list settings, mail content
 * [[
 * Mailing list settings, list behaviour
 * [[
 * Manage your recipients (per list and/or via custom groups)
 * [[
 * Add members to your list (both WP users and users outside WP are possible)

## FAQ

### How do I send an email?

When you want to use WP Mailster you don’t need to browse to a website, login and
do something to send the message there – you just use your favorite mail client.

Simply write an email to the mailing list’s address – and nothing else. So use Gmail,
Outlook, Thunderbird, a Webmailer, any way you like – just send it to the mailing
list address you have setup in WP Mailster.

### Why take the emails so long to be delivered? How can I speed up sending?

WP Mailster is a part of WordPress which is a PHP based web application. That means:
it can not act/run without being triggered and it can not run forever when triggered.
This is a technical limitation coming from PHP, not from WP Mailster or WordPress.

Triggering means that somebody accesses the site. During the page load WP Mailster
is handling the jobs to do (mail retrieving/sending). Thus mails can only be sent/
retrieved when somebody is browsing your site, otherwise the delivery is delayed
or never done. As your site might not be browsed every few minutes 24×7 we recommend
you to use a cronjob that opens the site periodically. We have a guide on our website
on how to set that up.

### What are send errors?

The send errors are messages your email server is giving back to WP Mailster basically
saying “I will not forward this message”. Then WP Mailster sending for some time
but eventually stops which is what you see happening.
 The cause can be a lot of
things, e.g. hitting send limits (per hour/day) or sending email with content that
the server does not like. You need to find out what your email servers are telling
WP Mailster. Please follow our troubleshooting guide on our site.

### Why do I get a “Certificate failure” error message upon checking the inbox connection?

You might get an error message like this when checking the connection settings: “
Certificate failure for [server] Server name does not match certificate” or “Certificate
failure for [server] unable to get local issuer certificate”.
 This is often the
case when you use your own mailing server (with a self-signed certificate). To get
a connection established, you need to deactivate the automated certificate check.
Do this by adding the following line in the special parameter box: **/novalidate-
cert**

### What does the message “Problem identified: PHP IMAP extension not installed” mean?

Your server needs the PHP IMAP extension installed, otherwise WP Mailster can not
work at all. There is nothing that we can do about that, you need to contact your
web hoster and see whether they can enable/install the PHP IMAP extension.
 If that
is not possible you need to use a different web hoster providing a more suitable
environment. Please note that it does not matter whether you want to use IMAP or
POP3 for accessing the mailing list inbox. You need the extension in both cases,
it is not specific to the IMAP protocol.

### Why do I get “Connection refused” or “Network is unreachable” messages, although I use the correct mailbox settings?

In most situations this connection errors show up when your web hoster (where WordPress/
WP Mailster is installed) is blocking outgoing connections such as connection attempts
to 3rd party email servers. This is done to avoid spam sending.
 Please contact 
your web hoster, so they configure their firewall to allow you to send emails.

### Why does my website show this error “Fatal error: Out of memory (allocated […]) (tried to allocate […] bytes) in […]/wp-content/plugins/wp-mailster/[…]”

Your issue is very likely coming from a large email causing an PHP out of memory
error. This is resulting from the fact that every PHP environment has a memory limit.
This limit is hit when the email is tried to be retrieved from the mail server.

Please remove this email from the mailing list in question. Either through a mail
web-frontend or with the “Delete first email in inbox” tool the “Tools” section 
in the mailing list’s settings. In order to prevent have this happen in the future:

 * Raise the PHP memory limit. Your web hoster can help you with that.
 * Introduce a maximum email size for WP Mailster. You can find this setting in 
   the “List behaviour” tab of the mailing lists settings. If larger emails are 
   in the inbox, WP Mailster will not try to process them but simply delete it and
   tell the sender what happened.

### What is the difference between a Mailing List and a Group?

A **mailing list** is a set of recipients that should all get the messages send 
to the mailing list’s email address.

A **group** is a way of organizing users. Think of it like a bucket of users. It
comes in handy if you want certain users be recipients of multiple mailing lists.
Then you would not add the users directly to the recipients of a mailing list, but
rather add a group.

An example would be that you have three groups: Management, Project Coordinators
and Developers.

If you want to run a company-wide mailing list (e.g. all@example.com) and a project
mailing list (e.g. project.import@example.com) then you would add

 * all three groups (Management, Project Coordinators and Developers) as recipients
   of the company-wide mailing list
 * only the Project Coordinators and Developers groups as recipients of the project
   mailing list

Why all that?
 In case someone joins the project team you would only add the user
to the Developers group. Then the user would be automatically be a recipient of 
both the project and the company-wide mailing list. The same thing applies if someone
leaves: the user only needs to be removed form the groups and thus is automatically
removed from the mailing lists that have this groups as the recipients.

So to sum up: if you run many lists and have many users that are largely managed
by the admin, then it might be handy to organize users in groups and add the groups
as the recipients.

### How can I report security bugs?

You can report security bugs through the Patchstack Vulnerability Disclosure Program.
The Patchstack team help validate, triage and handle any security vulnerabilities.
[Report a security vulnerability.](https://patchstack.com/database/vdp/wp-mailster)

## جائزا

![](https://secure.gravatar.com/avatar/a8e90eb01ea38519a5124fd0f88819fdef0e3fe17d5ba70bc84df16a4550a68f?
s=60&d=retro&r=g)

### 󠀁[Great support!](https://wordpress.org/support/topic/great-support-5905/)󠁿

 [cncladmin](https://profiles.wordpress.org/cncladmin/) 3 ڊسمبر 2024

I’ve been using this plugin for about 3 years now, and it’s been working a charm.
Simple and effective. Then I recently ran into a little problem. The developer responded
very quickly, and I was able to resolve the issue right away.

![](https://secure.gravatar.com/avatar/6a40f439cfc166d7ac2f5460ef9804604974e992ba8f9505fc0be8e4f9d9c356?
s=60&d=retro&r=g)

### 󠀁[Great support – even for free version!](https://wordpress.org/support/topic/great-support-even-for-free-version-2/)󠁿

 [Peter Borcherds](https://profiles.wordpress.org/paliz/) 8 نومبر 2024

Holger was brilliant in helping me sort an issue with blank emails. He sent me an
amended version of the plugin which solved the issue. Great communication and so
helpful, even though we use the free version! The plugin is full of features not
available in other WordPress mailing list plugins, and the even the free version
gives us all the functionality we want. Thank you, Holger!

![](https://secure.gravatar.com/avatar/a3a9037f7808933c566aa411d46fdb62b145318d50b7b8633a9a6d4ec116cecf?
s=60&d=retro&r=g)

### 󠀁[Great Mailinglist Software and helpful support](https://wordpress.org/support/topic/great-mailinglist-software-and-helpful-support/)󠁿

 [Eric](https://profiles.wordpress.org/ericschuemann/) 30 اپريل 2024

I’ve been using Mailster for many years, first in Joomla and now in Wordpress. The
most important thing for me is that the editors use their regular WordPress login
to manage the mailing lists. And it just works.

![](https://secure.gravatar.com/avatar/9646015810d57d364c1fd39cd08e84f977d0ad066fafc7da8e72a4a6ff9e5416?
s=60&d=retro&r=g)

### 󠀁[Besides the good functionality: Superb and efficient service!](https://wordpress.org/support/topic/besides-the-good-functionality-superb-and-efficient-service/)󠁿

 [Michael Finkenberger](https://profiles.wordpress.org/mitfi/) 19 مارچ 2024

I have been using this plugin for a longer period on different sites and I am very
happy with its possibilities and its versatility. Recently, I had a problem which
was related with the new EU legislation when it comes to using a from address different
from the mail list address. Although I am using just the free version (as of today…),
I was supported in a superb manner with fast and helpful suggestions. At the end,
those suggestions were correct and the problem was solved with some effort provided
by the plugin author! I can absolutely recommend this plugin not only or its functionality,
but also for the service being provided: you are definitely not alone! Thanks for
that and kindest regards! Michael

![](https://secure.gravatar.com/avatar/b1c356c12bc350820e6d1966b19c229d48f4e4174b8bf65c933a720e4c1cb849?
s=60&d=retro&r=g)

### 󠀁[Nice](https://wordpress.org/support/topic/nice-4728/)󠁿

 [Herky Fishbine](https://profiles.wordpress.org/herky-fishbine/) 17 جنوري 2024

Does what it says it does. Fast support.

![](https://secure.gravatar.com/avatar/0d38c0aab05a4f563fe9597e032624471de662bee58b154454285d077cff70e0?
s=60&d=retro&r=g)

### 󠀁[Best in Class](https://wordpress.org/support/topic/best-in-class-83/)󠁿

 [thpho](https://profiles.wordpress.org/thpho/) 28 آڪٽوبر 2023

This plugin is the best alternative one can find when “migrating” from tools like
Mailman. Support is provided directly by the dev and excellent. I can clearly recommend
this plugin over all the other options out there! Thank You.

 [ جمع: سڀ 32 تبصرا پڙهو ](https://wordpress.org/support/plugin/wp-mailster/reviews/)

## تعاون ڪندڙ & ڊولپرز

“WP Mailster” اوپن سورس سافٽ ويئر آهي. ھيٺين ماڻھن ھن پلگ ان ۾ حصو ورتو آھي.

تعاون ڪندڙ

 *   [ brandtoss ](https://profiles.wordpress.org/brandtoss/)
 *   [ Michalis “Svelon” Velonakis ](https://profiles.wordpress.org/svelon/)

جمع: “WP Mailster” 3 جڳهن ۾ ترجمو ڪيو ويو آهي. [ترجمي ڪندڙن](https://translate.wordpress.org/projects/wp-plugins/wp-mailster/contributors)
جي مهرباني سندن تعاون لاءِ.

[ترجمو ڪريو “WP Mailster” توهان جي ٻولي ۾.](https://translate.wordpress.org/projects/wp-plugins/wp-mailster)

### ڊولپمينٽ ۾ دلچسپي؟

[ڪوڊ براؤز ڪريو](https://plugins.trac.wordpress.org/browser/wp-mailster/)، چيڪ ڪريو
[SVN مخزن](https://plugins.svn.wordpress.org/wp-mailster/)، يا رڪنيت حاصل ڪريو [ڊولپمينٽ لاگ](https://plugins.trac.wordpress.org/log/wp-mailster/)
پاران [RSS](https://plugins.trac.wordpress.org/log/wp-mailster/?limit=100&mode=stop_on_copy&format=rss).

## لاگ تبدیل ڪريو

#### 1.8.23

_Release Date – March 20th, 2026_
 * [Bug Fix] Avoid PHP 8.3 warnings Deprecated:
Creation of dynamic property * [Bug Fix] Fix: avoid “array_merge(): Argument #2 
must be of type array, null given” * [Bug Fix] Fix deprecation warnings about utf8_encode
and utf8_decode

#### 1.8.22

_Release Date – July 6th, 2025_
 * [Bug Fix] Fix issue where apostrophe character
within SMTP error code makes it that send errors are not stored, closing SQL injection
attack vector * [Bug Fix] Fix PHP Deprecated: strripos(): Passing null to parameter
in MailUtils.php * [Bug Fix] Fix for thread/references shortening * [Bug Fix] Prevent
PHP warning (array_key_exists(): Argument #2 ($array) must be of type array, null
given)) when a sender without TO recipient is received

#### 1.8.21

_Release Date – January 2nd, 2025_
 * [Bug Fix] Fix Cross-Site Scripting (XSS) vulnerability

#### 1.8.20

_Release Date – January 2nd, 2025_
 * [Improvement] Add confirm delete dialog for
list views (e.g. mailing lists, users, groups, emails, …) * [Bug Fix] Sender/SMTP
connection checks working again * [Bug Fix] Do not save attachment(s) when the email
fails to be saved * [Bug Fix] Fix subscribe/unsubscribe widget (to not display HTML
tags for the widget title)

#### 1.8.19

_Release Date – November 30th, 2024_
 * [Bug Fix] Fix issue in subscribe/unsubscribe
shortcodes introduced in v1.8.18

#### 1.8.18

_Release Date – November 27th, 2024_
 * [Bug Fix] Fix Cross-Site Scripting (XSS)
vulnerabilities * [Bug Fix] Fix Stored Cross-Site Scripting (XSS) vulnerability (
CVE-2024-11782) * [Bug Fix] Fix Sensitive Data Exposure vulnerability (attacks require
user role of Subscriber or higher) * [Bug Fix] Fix PHP warnings

#### 1.8.17

_Release Date – November 15th, 2024_
 * [Bug Fix] Fix for when certain email character
set conversion lead to an empty email body * [Bug Fix] Fix SQL Injection vulnerabilities(
attacks require user role of Contributor or higher) * [Bug Fix] Fix Cross-Site Scripting(
XSS) vulnerabilities (attacks require user role of Contributor or higher) * [Bug
Fix] Fix Sensitive Data Exposure vulnerability (vulnerability exists only when CSV
exports have been done) * [Bug Fix] Fix Sensitive Data Exposure vulnerability (attacks
require user role of Subscriber or higher) * [Bug Fix] Fix Settings change vulnerabilities*[
Bug Fix] Fix Arbitrary Content Deletion vulnerabilities

#### 1.8.16

_Release Date – October 28th, 2024_
 * [Improvement] WordPress 6.7 compatibility(
marker) * [Bug Fix] Security fix to close Cross-Site Scripting (XSS) vulnerability

#### 1.8.15

_Release Date – October 16th, 2024_
 * [Improvement] Improve error handling and 
logging * [Improvement] Add selected logging about queue status and actions * [Improvement]
WordPress 6.6 compatibility (marker) * [Bug Fix] Remove no longer relevant code

#### 1.8.14

_Release Date – May 24th, 2024_
 * [Improvement] Automatically shorten (too) long
subjects, current max length: 191 characters * [Bug Fix] Fix email character display/
modification issues with Baltic encoding * [Bug Fix] Fix backend email archive view(
and other admin list views) for Safari * [Bug Fix] Fix some rare cases where email
was not saved to database * [Bug Fix] Fix multiple PHP warnings

#### 1.8.12

_Release Date – February 1st, 2024_
 * [Bug Fix] Fix reCaptcha (v2 is still used)*[
Bug Fix] Fix multiple PHP warnings * [Bug Fix] Fix multiple PHP deprecation messages(
Deprecated: Creation of dynamic property)

#### 1.8.11

_Release Date – December 21st, 2023_
 * [Improvement] CSV import also supports file
with only emails (no name column) * [Improvement] Do not create Microsoft and Google
default connections because of missing OAUTH2 support * [Bug Fix] Avoid error “Prohibited
input U+00000081” and update idna-convert library * [Bug Fix] Fix issue where special
characters in subject break user interface (list of archived emails, list of queued
emails) * [Bug Fix] Bounce emails containing email addresses in angle brackets are
showing the addresses in the email archive email details view

#### 1.8.10

_Release Date – September 4th, 2023_

 * [Bug Fix] Fix for: Non-static method PEAR::isError() cannot be called statically
 * [Bug Fix] When moderation is active, the list administrators (serving as moderators)
   should not need to approve their own messages to the list

#### 1.8.9

_Release Date – August 18th, 2023_

 * [Bug Fix] submitTxt parameter works again for subscribe/unsubscribe shortcodes
 * [Bug Fix] headerTxt parameter works again for subscribe/unsubscribe shortcodes
 * [Bug Fix] Fix error 1406 Data too long for column references_to
 * [Bug Fix] Fix WordPress database error: [Unknown column ‘published’ in ‘where
   clause’]
 * [Bug Fix] When emails get deleted, no empty folders remain (where the attachments
   were stored in before they were deleted)
 * [Bug Fix] Fix two bugs related to email digests that could prevent digests from
   being sent (Society & Enterprise edition)
 * [Bug Fix] Avoid warnings with PHP 8.2

## ميٽا

 *  Version **1.8.23.0**
 *  Last updated **4 هفتا اڳ**
 *  Active installations **400+**
 *  WordPress version ** 5.3 يا وڌيڪ **
 *  Tested up to **6.9.4**
 *  PHP version ** 5.6 يا وڌيڪ **
 *  Languages
 * [English (US)](https://wordpress.org/plugins/wp-mailster/), [German](https://de.wordpress.org/plugins/wp-mailster/),
   [Spanish (Chile)](https://cl.wordpress.org/plugins/wp-mailster/), ءِ [Spanish (Spain)](https://es.wordpress.org/plugins/wp-mailster/).
 *  [پنھنجي ٻولي ۾ ترجمو ڪريو](https://translate.wordpress.org/projects/wp-plugins/wp-mailster)
 * Tags
 * [listserv](https://snd.wordpress.org/plugins/tags/listserv/)[mailing list](https://snd.wordpress.org/plugins/tags/mailing-list/)
   [mailman](https://snd.wordpress.org/plugins/tags/mailman/)
 *  [ترقي يافته ڏيک](https://snd.wordpress.org/plugins/wp-mailster/advanced/)

## درجه بندي

 4.9 out of 5 stars.

 *  [  31 5-star reviews     ](https://wordpress.org/support/plugin/wp-mailster/reviews/?filter=5)
 *  [  0 4-star reviews     ](https://wordpress.org/support/plugin/wp-mailster/reviews/?filter=4)
 *  [  0 3-star reviews     ](https://wordpress.org/support/plugin/wp-mailster/reviews/?filter=3)
 *  [  0 2-star reviews     ](https://wordpress.org/support/plugin/wp-mailster/reviews/?filter=2)
 *  [  1 1-star review     ](https://wordpress.org/support/plugin/wp-mailster/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/wp-mailster/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/wp-mailster/reviews/)

## تعاون ڪندڙ

 *   [ brandtoss ](https://profiles.wordpress.org/brandtoss/)
 *   [ Michalis “Svelon” Velonakis ](https://profiles.wordpress.org/svelon/)

## سھائتا

گذريل ٻن مهينن ۾ حل ٿيل مسئلا:

     1 مان 1

 [ڏسو سپورٽ فورم](https://wordpress.org/support/plugin/wp-mailster/)