Takayuki Miyoshi

Double Opt-In Helper is a WordPress plugin that helps developers implement the double opt-in process in their plugins.
<h4>What is double opt-in?</h4>
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.
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.
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.
<h4>I’m a developer. How can I use this plugin?</h4>
First, register an “agent” who can handle double opt-in sessions for you, and knows what to do when a user opts-in.
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:
<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>
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:
<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>
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.

Double Opt-In Helper

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

emailblaster

Capture email subscribers and send beautiful email. The email blaster widget allows you to collect email subscribers, design and send stunning HTML emails and email marketing. Manage your email subscribers and email marketing from one single place.
Email subscribe form is fully GDPR compliant. All data is stored in the UK, optimising a double opt-in email subscribe form.
Email Blaster & Email Subscribe Reviews
<blockquote>
“Email blaster a very user friendly system” 
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“We have found Email Blaster’s interface really easy to use, allowing us to create good looking emails to send out to a wide array of potential clients. Uploading new lists is simple and the scheduling, delivery and analytics of the emails we send is really useful.” 
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“We would highly recommend email blaster, customer service is excellent, queries answered within minutes.” 
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“We are very happy with email blaster and we have used them for many, many years and probably liaise with them every week… no issues.” 
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“By far the best email subscribe and email marketing software.” 
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“We have used email blaster since 2012 and had trialled several other ESP tools prior to this. However, I can confirm that this is the by far the simplest and most effective and reliable service that we have used to date and the unparalleled customer service we receive from the EB team ensures that we will not be going anywhere else soon.” 
 Mark Stephens @ F10 Group
</blockquote>
Free To Use, Collect Email Subscribers
It is completely free to design and embed any email subscribe form. Simply open a free account with email blaster, design your form, enter the quick code…done!
It only takes 5 minutes to create a stunning email subscribe form and start building leads.
After setting up your subscribe form, you won’t have to ever look at it again. Subscribe will automatically collect new email subscribers adding them to your mailing list. Subscribe offers a fully automated easy to use solution.
Send Email Marketing
After collecting email subscribers, quickly design beautiful email using the intuitive drag and drop HTML email newsletter designer. Integrated into the software, including a free library of pro designed ready to use templates. You do not need to be a coder or HTML expert to quickly create stunning email marketing and build email subscribers.
Email subscribe and email blaster also includes a huge selection of free to use email marketing templates, allowing you to create stunning email quickly and easily.
Check out the full template library: <a href="https://www.emailblasteruk.com/email-marketing-resources/free-email-marketing-templates" rel="nofollow ugc">Free email subscribe and email marketing templates</a>
GDPR Compliant
Email blaster and the Email Subscribe app is fully GDPR compliant. For EU citizens, GDPR requires that you store all personal information and customer records inside the EU and protection of GDPR zone.
When using email blaster and the email subscribe app, all data is safely stored in the UK under full protection of GDPR.
A full record of consent is kept with every email subscribe, providing complete GDPR compliance and assurance.
Fast UK Based Support
We pride ourselves on providing friendly prompt support for every user (free of charge!). We aim to pickup any support request within 15 minutes (during UK office hours). Don’t believe it? After creating an account, open a support ticket and put us to the test! We also offer live chat and office based telephone support.
Email Marketing Automation
After a user subscribes to your newsletter, use the integrated ‘automate’ app to sent a series of timed welcome emails or auto responders. Automate can link to your email subscribe form to provide a truly automated email marketing solution for your website. Once setup, new subscribers can be sent a series of introduction emails without any manual intervention or tweaking.
Discover how to automate your email marketing with our dedicated information page: <a href="https://www.emailblasteruk.com/email-marketing-solutions/automate" rel="nofollow ugc">Email Marketing Automation</a>
Automatic Email Subscriber Verification
Integrated at no extra cost, email blaster’s powerful list checking engine will automatically verify all subscribers details. Removing dead and invalid email addresses. Giving you complete control of your email marketing and email subscribes.
Check out more information on <a href="https://www.emailblasteruk.com/email-marketing-solutions/list-ai" rel="nofollow ugc">Email Subscriber Verification</a>
Email Subscribers Feature List
<ul>
<li>Protect your list from bot attacks – Double opt-in subscribe form to protect against bots.</li>
<li>Free newsletter templates – Professionally designed <a href="https://www.emailblasteruk.com/email-marketing-resources/free-email-marketing-templates_" rel="nofollow ugc">email newsletter templates</a></li>
<li>Automatic list cleaning – Automatically verify all email addresses, removing dead and invalid data.</li>
<li>Integrated analytics – Track who read, clicked on and interacted with your email subscribe newsletter.</li>
<li>Drag and drop designer – Easy to use drag and drop email designer, create beautiful subscribe forms and email newsletters.</li>
<li>Free stock images – Choose from millions of royalty free stock images to embed on your email subscribe or email newsletter design.</li>
<li>Spam score – Check your email newsletter spam rating before sending, helping to ensure your email lands directly into your subscribers inbox.</li>
<li>Send scheduling – Automatically schedule an email marketing send for any time or date of your choosing.</li>
<li>Social media integration – Sync with your favourite social networks, posting a copy of your email newsletter to both your Facebook and Twitter feeds.</li>
<li>GDPR compliant – Fully GDPR compliant opt-in forms and email marketing solution.</li>
<li>Free UK based support – Free UK based; telephone, online, live help and email support.</li>
<li>For all business sizes – Our UK based network sends over 5 million emails every week. Trusted by over 65,000 businesses.</li>
</ul>

Email Blaster Newsletter Signup Form

Email subscribe forms for your website. Send HTML email marketing (newsletters). GDPR compliant, UK based email marketing and email automation.

Double Opt-In Helper vs Email Blaster Newsletter Signup Form