Takayuki Miyoshi

<p>Double Opt-In Helper is a WordPress plugin that helps developers implement the double opt-in process in their plugins.</p>
<h4>What is double opt-in?</h4>
<p>Double opt-in is a procedure used to confirm user’s consent. Today, service providers are required to obtain clear consent from users prior to collecting or using their personal data. In some situations, however, asking the user to tick an “I agree.” checkbox is not sufficient. Double opt-in serves a useful role in such situations.</p>
<p>A typical double opt-in process starts by the service provider sending an email message to the user. The message includes a URL link to the provider’s website and asks the user to click the link if they agree on conditions. Usually, the URL includes some sort of unique random code that works as a token to confirm the user’s consent.</p>
<p>By doing this, the service provider can confirm that the real user (not a bot or someone else) has consented, because only the user should be able to access messages to their email address.</p>
<h4>I’m a developer. How can I use this plugin?</h4>
<p>First, register an “agent” who can handle double opt-in sessions for you, and knows what to do when a user opts-in.</p>
<p>To register an agent, use the <code>doihelper_register_agent()</code> function. <code>doihelper_register_agent()</code> takes two parameters: the name of the agent (required), and an optional associative array of arguments. The available arguments are:</p>
<ul>
<li><code>acceptance_period</code> — The length of time (in seconds) for how long a double opt-in session remains live. Default value: 86400 (24 hours)</li>
<li><code>optin_callback</code> — The callback function that will be called when a user opts-in.</li>
<li><code>email_callback</code> — The callback function that will be called to send a confirmation email.</li>
</ul>
<p>After registering an agent, start a double opt-in session by calling the <code>doihelper_start_session()</code> function. <code>doihelper_start_session()</code> takes two parameters: the name of the agent (required), and an optional associative array of arguments. The available arguments are:</p>
<ul>
<li><code>email_to</code> — The recipient’s email address, used for the confirmation email. If you omit this argument, no email will be sent. If you do not provide this argument, you will need to provide the user with the confirmation link another way.</li>
<li><code>properties</code> — The properties array of the session. This array is to be passed to the <code>optin_callback</code> function as its only parameter. While you can include any information into this, the primary purpose of it is to pass user-related data to the opt-in callback.</li>
</ul>
<p>The session data will be stored in the database until the user opts-in, or the acceptance period (from <code>doihelper_register_agent()</code>) expires.</p>


Double Opt-In Helper

Double Opt-In Helper is a WordPress plugin that helps developers implement the double opt-in process in their plugins.

pinpointe

<p>Pinpointe is a feature-rich, cloud-based email marketing software solution for B2B companies. Pinpointe’s award-winning system brings “big-business” features, services and automation capabilities to small and mid-size B2B email marketing customers at an affordable price. For large volume customers sending from 1 million to 20 million emails / month and beyond, Pinpointe’s Enterprise Edition provides scalable dedicated infrastructure.</p>
<p>The Pinpointe Form Integration plugin for WordPress lets you easily add dynamic forms to your site or blog. Advanced features include:</p>
<ul>
<li>Display forms on home page, pages, posts and in other WordPress content</li>
<li>Show popups and customize how often they appear</li>
<li>Users can submit their info without ever leaving your pages (AJAX)</li>
<li>Create a library of forms for any number of Pinpointe mailing lists</li>
<li>Advanced rules for selecting where to display different forms</li>
<li>Use Pinpointe custom fields to save detailed customer data</li>
<li>Automatically add a checkbox to signup for your mailing list on comment forms</li>
<li>Choose from 9 different color palettes</li>
<li>Optionally customize the look of your forms using CSS</li>
</ul>
<p>This plugin is easy for non-experts to use but gives power users a wide array of tools for getting the most out of WordPress and Pinpointe. Increase the return on investment on your marketing campaigns by using the Pinpointe Form Integration plugin for WordPress.</p>
<p>NOTE: Forms created with this plugin are not the same as forms created via the Pinpointe web application. Forms created with this plugin are specifically built for WordPress integration and exist within your WordPress instance. Forms are not editable from the Pinpointe web application.</p>
<h3>Known Issues</h3>
<ul>
<li>The custom field dropdowns do not correctly display icons in the dropdown list when not on a Chromium-based browser.</li>
</ul>
<h3>Dependencies</h3>
<p>This plugin use the following dependencies:<br />
1. Font awesome 6 – Provides beautiful icons [https://fontawesome.com/icons]<br />
2. HTML5 Shiv – Useful for old browsers that may not support HTML5 [https://github.com/aFarkas/html5shiv]<br />
3. Jquery Placeholder – Useful for old browsers, e.g. IE to support placeholders in form fields [https://github.com/mathiasbynens/jquery-placeholder]<br />
4. JQuery Form – Allows you to easily and unobtrusively upgrade HTML forms to use AJAX [https://github.com/jquery-form/form]<br />
5. JQuery Validate – Provides drop-in validation for your existing forms [https://github.com/jquery-validation/jquery-validation]<br />
6. Tom Select – Provides native  element with more powerful options, simply a  on steroids. [https://github.com/orchidjs/tom-select]<br />
7. JS Cookie – A simple JS API for handling browser cookies [https://github.com/js-cookie/js-cookie]</p>


Pinpointe Form Integration

Add Pinpointe email marketing forms to your WordPress site

Double Opt-In Helper vs Pinpointe Form Integration