Subscribe to Comments 2.1
Subscribe to Comments 2.1 is a plugin that allows commenters on your blog to check a box before commenting and get e-mail notification of further comments. It is one of the most popular WordPress plugins out there for the simple reason that it helps foster a community around your blog by encouraging commenters to come back and stay engaged in the dialog.
Features
- Rudimentary security
- Users cannot enter a random e-mail into the subscription manager and modify someone else’s subscriptions
- In order to modify subscriptions, users need to use a special link, given in notification e-mails, and printed in the comments form as long as they have their comment cookie
- Recognition of subscription status
- Unsubscribed users see the “subscribe to comments” checkbox, but subscribed users see a “Manage your subscriptions” link
- The author of the post is recognized by either login or comment cookie and is assumed to be subscribed to the entry (as they will receive notifications through WordPress)
- Themeable subscription manager
- Uses visual style of WordPress interface
- Can be optionally accessed via “Manage” menu in WordPress
- E-mail verification of block requests
- Javascript “invert selection” link to check/uncheck subscriptions for mass deletion
- “Return to the page you were viewing” link that persists at the top of the page, so that users can easily return to the post they were reading once they are done modifying subscriptions
- Ability to let users change notification e-mail address
- In the subscription manager, users can request that their notification address be changed for all their subscriptions
- Special link is sent to the old address for verification
- Once clicked, their e-mail address will be changed instantly for all their comments
- Easy integration into comments form
- No modification of comments form needed for WP 1.5+ (supported themes)
- For users who want custom placement of the checkbox/link to subscription manager, this can be done with one simple function call, placed anywhere in the comment form
- Subscription without leaving a comment
- By popular demand, you can now offer visitors the option of subscribing to comments on an entry without having to leave a comment themselves
- If the reader later decides to join the conversation, their subscription continues without them having to explicitly set it
- Customization
- You can make the Subscription Manager that your users see use your theme’s header, footer and sidebar, using CSS to style it to fit your site
- Internationalization
- I’ve written Subscribe to Comments 2.1 with i18n in mind, making full use of
__()and_e()functions. The domain is “subscribe-to-comments”.
- I’ve written Subscribe to Comments 2.1 with i18n in mind, making full use of
Download
Version 2.1 Update
Version 2.1 of Subscribe to Comments has a feature that people have been begging me to implement for many months: you can view the list of people who are subscribed to posts on your blog, and you can also see a list of the most “subscribed” posts. Also in this version is a new one-file install. You just put subscribe-to-comments.php in your /plugins/ directory, activate, and you’re done. This version will work on WordPress versions from 2.0.6 through 2.3.1 (highest tested).
Versions
- 2.1.2 Fixed a few bugs that’d send bad notifications (thanks Donncha!), cleaned up some code and moved to using proper WP escaping functions
- 2.1.1 WordPress 2.2 compatibility! Also note that support for
attribute_escape()is needed, so if you get errors about that, upgrade to the latest version in your branch - 2.1 big update, fixing a few potential XSS holes, and misc error messages… see above for details
- 2.0.8 XSS security fixes, hopefully fixed “+” symbols in e-mail for good
- 2.0.7 additional “funky e-mail” fixes
- 2.0.6 support for e-mail addresses with “+” symbols, option to disable CSS “clearing”
- 2.0.4 potential security bugs, better WP 2.0 capabilities compat
Feedback/Bugs
Feel free to leave bug reports or feature requests here. Use this entry’s comments to ask support questions or offer general feedback
I’ve spent a lot of time writing this code and supporting it. If you derive some benefit from this code, please consider showing your gratitute in a more tangible
way. Thanks!
I have received $0 this month for my coding efforts.
Mark,
Does this plugin automatically show the comment, or direct bloggers back to your site to comment?
Thanks for this plugin.
I translate version 2.1.2 to Serbian, so here is translation .po and .mo.
Because Subscribe to Comments has not gettexturized, so I do that. More info read here (in Serbian Cyrillic), or get prepared package (with outdated Serbian translation included) here.
Betsy,
The content of the comment is sent in the notification e-mail.
I try to keep the development code relatively stable, but I can’t promise anything. Like all GPL software, you use it at your own risk, but especially so with development versions.
Statievsky Danila,
It doesn’t change where comments are stored. As of right now, the subscriptions are stored as a column in the comments table or as custom fields on the post. In the next version, it’ll all be stored as custom fields on the post. Any hosting change should bring your existing database along, so you won’t lose anything.
Fidel,
Yes! The next version of the plugin will have an option to enable double opt-in (makes you click on a link sent to you before you can be subscribed). It is already implemented in the plugin’s development branch, but it hasn’t been tested very thoroughly yet. I plan on releasing the new version before the end of the year, and probably sooner.
slobjones,
Check out the options. You can have it include your theme’s header/footer.
Mark,
The double opt-in is very good news! I have always refrained from installing a subscription plugin on any of my blogs because I was worried of being accused of spamming. Some hosting companies might even suspend your account if they receive complaints.
With a double opt-in, you have proof that the person who subscribed is the email owner.
Hi,
Thanks for this most helpful plugin!
I have a question though:
The php code shows there is a setting called “default_subscribed”, which suggests the checkbox is either default true or false for readers. But i can’t see any property like that in the Settings screen. Why not?
Hello, I love this plugin but i was wondering if there is an easy way to deactivate if for a certian theme? where dose the plugin insert code into the theme? I use a plugin that outputs a theme inside of facebook and i need to turn off the plugin for that.
Thanks,
Brandon
Hi Mark - Thanks for the great plugin. There were some rumors going around that the functionality of your plugin might make it into 2.7. I haven’t heard much about that recently and don’t see it in the beta releases, so I assume it won’t be making it into the core for 2.7. Is it still being considered for a future version like 2.8?
Second, I have a few posts on my site that have 500+ subscribers. When someone adds a new comment my server load takes a dramatic hit. Typical loads are around 0.5 - 0.8, but when a comment comes in on pages with hundreds of subscribers the server load can go to 10 or 20 for a few minutes. While I could certainly throw more hardware at the issue, it seems unreasonable to add new hardware for this one feature. Has there been any consideration of adding a more conservative “batching’ type approach to sending out the notification emails?
As an alternative while the notification email with a link to unsubscribe with the email address pre-filled in is nice…. my server load might appreciate a generic link where the entire email could be BCC’d to all of the subscribers rather than spitting out several hundred individual, customized emails.
Tim — No, the functionality of Subscribe to Comments is not going into WordPress 2.7. I’m against including it in WordPress core, and I doubt any of the other developers would try to put it in against my wishes.
I’ll have a think about your scaling issues. My stock response has been to say that the feature doesn’t really scale that well from a practical standpoint, and that it is designed for low-volume comment threads. Unfortunately, the customized e-mails are important, because without them, the user could have no way of accessing their subscriptions and unsubscribing, so I’d have to work around that.
Hi, I notice in this thread that there’s a few unofficial translations posted.
If we submit po files to you will you include them in an official release?
Yes, that’s the plan. Before I release the next version, I’ll freeze the strings, and issue a general call for translations.
Brandon — it just uses the
comment_formhook. So you would useremove_action()to remove its function from that hook.Marko — http://markjaquith.wordpress.com/2008/04/24/why-subscribe-to-comments-doesnt-let-you-check-the-subscription-box-by-default/
Definitely this plugin helps foster a community around blog by encouraging commenter’s to come back and have permanent activity and traffic on the blog.
On research for checking performance on my blog, i sadly had to find out, that this plugin costs most of database acces time out of all plugins when looking at single page.
plugin subscribe-to-comments 3 access to db 62.9 ms
I have to deactivate it until the performance is fixed. Usiong aktual wordpress 2.6.5
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hello!!
Good stuff!
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As i went through the blog.Subscribe to Comments 2.1
As i went through the blog.
Thank you for this information.
Mark, I have a client who uses an exchange server to handle all their mail, separate and distinct from their web site server where I have WP installed. The mail server sees the plugin attempt to send mail from their domain and kills the email instantly. I’m told by the IT department of my client that as long as SMTP protocol is used instead of the standard PhP Mail, everything will be fine. So, what do I need to look for/modify/update/remove to make this happen?
Many thanks. And even more if I can resolve this issue!
Hi!
Thanks for this wp-plugin.
After I update, in ACP option where says leave checked or not disappear.
How can i fix this?
Thank you.
Excellent plugin.
One little hitch I’m noticing is that for some laughable reason (unless it’s a weird bug) people seem to be subscribing to comments without entering an email address!? So what’s happening is when I look at the “manage” area, I see things like this:
“Top Subscriber List
Show all subscribers
* (10)
* (2) notreal@yahoo.com…”
Since there’s no email address for the top “subscriber”, I can’t do anything to get rid of it. Those 10 subscriptions show up below as well:
“Subscriptions
is subscribed…”
But checking all the boxes and clicking remove does nothing. I even tried to figure out a way to get rid of them directly in phpMyAdmin, but couldn’t seem to figure out how to do it there either!?
—
Is there anyway to have the box already ticked off before hand so that the user does not have to manually check it?
If so, please tell me how to do it as people who visit my site are asking for it!
Thanks, loving this very much!
—
Hi Mark,
I’ve found that the current version doesn’t allow me to uncheck the “CSS clear” option - others have experienced this issue too:
http://wordpress.org/support/topic/193601
I take it this will be fixed in the new version?
Hi.
How do I make “Subscribe to Comments” box checked by default? In my blog it is not checked, the commenter has to check it every time.
Thanks for a job well done.
Steve,
I believe you should be able to use the wpPHPMailer plugin to convert your blog to use the SMTP protocol instead of php mail.
This is what I use on my blog (http://worldramblers.com) and it’s worked perfectly so far. The plugin is easy to install and configure.
Google the Plugin name I mentioned and you should find it no problem. I use version 1.61
Good luck
Rich
Hello,
Subscribe-to-comments has a bug with 2.7 at least in my configuration. The dashboard displays a white page.
Will this plugin be updated?
I hope so…
yes there are still bugs, but this is a great post
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For Wordpress 2.7, the comments subscription admin page did not work when I clicked on an email.
I changed line 872 in subscribe-to-comments.php from:
form_action = ‘edit.php….’
to:
form_action = ‘tools.php….’
and things magically began working.
thank you, useful plugin
Hi,
Here are some fixes for the version 2.1.2 to correctly handle french translation : http://admforum.edforum.net/viewtopic.php?p=2061#p2061
And updated french translation for the 2.1.2 plugin version (base on the translation available here: http://plugins.trac.wordpress.org/wiki/SubscribeToComments ).
Great and well-tested plugin. Thanks so much.
Has this plugin been tested on WP ver.2.7 ?
I see a comment having an error..
I think in Germany this plugin would be forbidden - since it doesn’t provide double opt-in function. Anyone could enter my e-mail address in a comment and I would recieve notifications even though I don’t want them.
I hope a later release of this plugin will fix that (send an activation e-mail).
В сообщении конечно много чего упрощено, в отличии от реальности…
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Seems to work fine for me. What version of Wordpress are your using?
Good work… thanks…
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Hi.
I’m using the Thesis theme with Wordpress, and have installed the “Subscribe to Comments” plug-in, but I do not get any prompt/checkbox to “Notify me of follow-up comments via e-mail”.
I have tried it with the option both checked and and checked to do a CSS “clear” on the subscription checkbox/message (uncheck this if the checkbox/message appears in a strange location in your theme).
The blog I have it installed on is at http://ComputerAndOnlineSecurity.com
Any suggestions? I believe this is an essential feature for my blog comments.
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Thanks, it’s very util!!
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