Tammy Hart

<p>This plugin adds a page to the admin under Users that includes a form for users to send email invitations to their friends to register at your site. You can also add the form to the front end of your site with the <code>invite_friends()</code> template tag or the <code>[invite_friends]</code> shortcode.</p>
<p><strong>IMPORTANT:</strong> This plugin will not allow invited friends to register unless you have registration turned on.</p>
<h4>Features</h4>
<ul>
<li>Invite multiple friends at one time</li>
<li>Customize the email subject and message that is sent</li>
<li>Customize the URL to redirect a user to after they register</li>
<li>Store successful registered users in the inviter’s user meta data</li>
<li>Store the inviter in the new user’s meta data</li>
</ul>


Invite Friends to Register

Use this plugin to allow users to invite their friends to register on your site.

rtCamp

Jignesh Nakrani

<p>With this plugin, you can send auto slack invitation via email to user who submitted a gravity form.<br />
This plugin works with Gravity form only. Once you have created a gravity form and do required settings, this plugin will start working.  Whenever new entries are submitted via gravity form, the respective user will receive an email with slack channel invitation link.</p>
<h4>Requirement</h4>
<ol>
<li>Gravity Form plugin.</li>
<li>Slack Team Name.</li>
<li>Slack Authentication Token.</li>
</ol>
<h4>How this plugin works</h4>
<ol>
<li>Set the “Team Name” and slack authentication token under Gravity Form -> Settings -> Slack Invite.</li>
<li>Now, create a gravity form, go to Form Setting -> Slack Invite and click on “Create one” link to set an email field.</li>
<li>Once the user submit a gravity form, he/she will receive a slack invite via email notification.</li>
</ol>
<p>Example: Let say you have a slack team group, in which you want users to come up and chat/discuss. However, you don’t know to whom you want to invite.<br />
So in this case, just create a gravity form with some fields and make it public on your website. Interested members will submit that form and they will automatically receives invitation email.</p>
<p>Note: Your Gravity Form must have an email field.</p>
<p>Development of this plugin is done on <a href="https://github.com/rtCamp/automate-slack-invite-gravityforms" rel="nofollow ugc">GitHub</a>. You can report issues and suggest features.</p>


Automate Slack Invite Gravityforms

I hate giving bad reviews but this plugin just doesn't work. I've submitted three separate issues on the support forum and still no reply after more than 3 months.

Doesn't work

With this plugin, you can send auto slack invitation via email to user who submitted a gravity form.

Invite Friends to Register vs Automate Slack Invite Gravityforms