Sorry I meant SMTP Email Plugin
you’ll have been sent an email with an account activation link, clicking that will activate the account and enable you to log in. (I have just done this myself using my WP3.0 test install).
Cool, glad that worked for you!
I installed the “Mail From” plugin and it’s working now.. Hosting company is “HostMonster” which is part of a parent company that owns, Powweb and a number of others, possilby BlueHost as well…
Welcome Pack will also do this in next version; I’m working with @crashutah on it. (end plug, hehe).
Use the BP Disable Activation plugin by @crashutah –
https://buddypress.org/community/groups/bp-disable-activation/
Make sure you add a captcha plugin or some type of spam prevention!
Take an activation URL in the activation email (send yourself a fake one if you don’t have one lieing around). Then, go into something like phpmyadmin. Look at the table for users (it’s different if you’re using WP vs. WPMU) and find the activation key. Replace the key in the URL and now you can use that URL to activate the account.
I’ve also heard rumor that someone might be working on a plugin to deal with this type of situation.
My problem with the activation e-mail is that when you click on the link in the e-mail it goes to google page not found listing the URL including the additional code .. however I found that by getting people to copy and paste it into their browser it did work .. not ure what is causing this problem. If it works in the browser why is it not working in the e-mail?
If you’re on BlueHost, there have been issues with the email being sent.
You can try the proposed solution listed here.
Help?!?!?! I am having the same problem except once a new user the hits “Submit Query” (which why does it say that anyway rather than register?) it just comes back to the same page with no error message. I am running WPMU 3.0BP 1.2.5.2. Everything was working fine. I’m not sure if it was the upgrade or a plug-in I installed, or some stupid error I made. I note that the last person who registered was 5 days ago. I am very new at the program and do not know yet how to code (but trying to learn!) I’ve dug all over, but can’t seem to figure it out. I am presenting the site at a conference for a school project, and now it suddenly stopped working! I am a broke grad student, but if someone can help me out, I can throw a few bucks their way if they can help me get it fixed before Saturday! The site is http://www.impacollective.org . I can be reached to chat or email at digitaldance007 @yahoo.com . PLEASE HELP!!!! 
I’m happy to delete all the new users since they shouldn’t be here yet anyway But I still can’t get any email to send outbound. I used the same host / setup with Joomla with no issues… Is there no way in WP/BP to see the email setup? To tell it to try sendmail or to use a specific SMTP server? That seems like huge missing feature???
That is, of course, an option, but I’m moving a community over from a site that was in Movable Type and Elgg into a new WordPress / Buddypress system and users are obviously attached to having the same username they had before and that people already know them by.
You have to edit the database to manually activate a new user. BP will use whatever mail server settings you have configured PHP for, which may well be sendmail.
I just delete them and tell them to sign on again… seems to be working for me…
I’m pretty new to Buddypress and WordPress. Launched my first site today with 95% of the “i can’t find my registration” emails solved by directing them to their spam folders. But beyond that I have three that can’t find their email, say it’s not in their spam folder, and I need to get em in. Opened phpadmin and didn’t see a “wp_signsup” listing. Checked out “wp_users” and found user_activation_key and there’s a list of 30 things and two of them have keys next to them. They’re different keys. How do I know which one to use? And how exactly do I use it. Do I go to the mydomain.com example url above and enter this key and then that gets them in? Or do I give them the key and they do that? Any insights most appreciated.
I just signed up to your site. Worked for me. even got to the “hey, lookit your nice avatar!” page. 
One thing I noticed – there’s not bp admin bar, no links in the menu, no indication anywhere about any BP areas.
As a new user, I’d have no idea where to go next.
But, then I did get my activation email, as I requested a blog as well. So, then I do see the admin bar when logged in. *phew*. So far, no errors though.
I tested this again on another install and same happening. Notification for activation email, mention, new friendship request, etc. all have problem. See same in yahoo and gmail emails.
It looks like the fix is to change:
$group_ids = $this->get_group_ids( $user_id );
to:
$group_ids = BP_Groups_Member::get_group_ids( $user_id );
in bp-groups-classes.php
I think the problem was that I had BP_MULTIBLOG_ENABLED, and didn’t have BLOGID_CURRENT_SITE set correctly in wp-config.php. I fixed that, but now, I get the following error when I try to delete a user:
[03-Jul-2010 13:22:47] PHP Fatal error: Using $this when not in object context in /var/www/vhosts/veraloft.com/httpdocs/wp-content/plugins/buddypress/bp-groups/bp-groups-classes.php on line 1053
The error occurs in delete_all_for_user(), a member function of BP_Groups_Member
Any ideas?
If I remove registration/register.php from my theme, I just get sent back to the subdomain’s home page when I try to register, without getting a form to register in. Where does the BuddyPress registration page come from when things are working correctly? Is it from the bp-default theme?
Remove the register.php from your user blog’s theme because you shouldn’t need it.
That’s causing the problem.
Yes, BuddyPress is activated network-wide.
I get redirected to subdomain.domain.com/register which runs the register.php file in my theme. The register.php file is a copy of the bp-default/registration/register.php file, with a couple of formatting changes.
Should I get redirected to domain.com/register (without the subdomain)?
btw, the contents of the bp-custom.php file are:
php define( ‘BP_ROOT_BLOG’, 9 );
php define( ‘BP_ENABLE_MULTIBLOG’, 1 );
if that’s any help.
If you’re using WPMU or WP 3.0 in network mode, try this:
https://wordpress.org/extend/plugins/bp-registration-options/
The plugin author hasn’t updated this for single WP yet.
A more, manual method involves forwarding the activation emails to an admin account so you can approve them manually that way.
Put this sample code in your theme’s functions.php:
http://wordpress.pastebin.com/Qf2cskRj
Replace “get_site_option( “admin_email” );” with a custom email address if you don’t want it to forward to your admin email addy.
Do you have BuddyPress activated network-wide?
If you activated BP network-wide, when you attempt to register from a subdomain, what is supposed to happen is you get redirected to BuddyPress’ register page.
