Double Opt-in for CF7 for WordPress Plugin Directory
Double Opt-in for CF7 is a WordPress app, with a 3.5 average rating from 2 reviews, as of July 8, 2026.
Double Opt-in for CF7 is a WordPress Plugin Directory app by Krzysztof Busłowicz. With a rating of 3.5★ from 2 reviews.
AppRanks data: Double Opt-in for CF7 ranks #0 in Accessibility on WordPress Plugin Directory, placing it in the top 1% of that category.
AppRanks verdict
Generated from live marketplace data — refreshed daily
Double Opt-in for CF7 is a mixed-rating WordPress app with a limited review volume. It is listed in the Email category on WordPress Plugin Directory, which AppRanks treats as the canonical taxonomy node for ranking and competitor comparison. 2 reviews put it in the early-traction tier — useful for early-stage stores willing to be on the leading edge. Early-traction review counts are sensitive to single launch periods or feature events, so a 30-day re-check before bigger commitments often resolves whether the trend is sustained. Paid-only pricing means evaluating fit on the marketplace listing or via the developer's documentation before installing. AppRanks tracks rating, review count, pricing tier, and category position daily — the figures on this page reflect the most recent scrape from the canonical WordPress Plugin Directory listing.
Pros
- +Published by Krzysztof Busłowicz — established developer track record
Cons
- −Average rating below 4.0 (3.5★) — read recent low-star reviews before committing
- −Limited review base (2) — ratings can shift significantly with new feedback
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How Double Opt-in for CF7 works
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[This plugin is outdated and no longer maintained. Please use the much easier Honeypot for CF7 instead.]
Adds double opt-in functionality to CF7 forms submissions. Double opt-in means that form submitters have to confirm their identity by their email account. The plugin is ready for translation.
Double opt-in dependencies
This plugin is an add-on to Contact Form 7 plugin by Takayuki Miyoshi.
Functionality of this plugin also depend on installing and activating one of the plugins, which saves Contact Form 7 submissions to WordPress database. At the time, compatible plugins are:
Flamingo by Takayuki Miyoshi
Contact Form 7 Database Addon – CFDB7 by Arshid
Note that BOTH Contact Form 7 and one of the listed above plugins are required for double opt-in functionality to work.
Help and Docs
The first and most complete documentation is located on plugin official page.
If you’re a developer, feel free to take a look at the plugin page on GitHub repository.
You can also seek for help on WordPress support forum.
Plugin features
One click conversion of existing CF7 forms into double opt-in enabled forms.
URL parameters encryption to make confirmation links safe.
HTML email templates with mail tags similar to used in CF7 plugin. If you know how to configure CF7 emails, double opt-in will be easy.
Automatic creation of the “opt-in” page to process confirmed submissions.
Adding a CSV file attachment to final submission email containing form data.
Adding file attachment to final confirmation email sent to the submitter.
Setting expiration time for submissions to be confirmed.
Ability to manually confirm forms. That can be useful if your submitter enters an invalid email address, and you are sure you want to send their submission anyway.
Additional enhancements
Apart from its main feature, Double Opt-in for CF7 adds some functions you may find nice and useful:
Custom, accessible file upload inputs for your forms which look better, can be CSS styled and allow easy selecting and deselecting files to upload. This works for every CF7 form, not only double opt-in enabled.
Custom, more specific validation errors for radio buttons and checkboxes for improved accessibility.
Option to change CSV separator when exporting submissions from Flamingo plugin. It also adds BOM to CSV exports, allowing them to be properly opened in MS Excel.
Additional column on Flamingo Inbound Messages screen indicating if submission is complete or still waiting for being confirmed by sender.
What is double opt-in and why use it:
Double opt-in is the safe way of receiving site visitor’s submitted input. Used with contact forms or online questionnaires or with user registration, it helps to reduce spam submissions. With GDPR laws, double opt-in is a strongly recommended way of getting user data. Because submitters have to confirm their identity from their email address, you can reduce risk of processing personal data without permission. Double – means here that user submitting the data has to give consent by checking checkbox option and additionally confirm their email-address.
Do not forget to set acceptance field in your CF7 form if GDPR is in concern!
How Double opt-in form works:
When someone fills and submits a form with double opt-in functionality, the first CF7 email goes back to THEM. There is a confirmation link in that email, which the submitter has to click on or paste in their web browser. The link has two encrypted parameters: submission serial number and submitter email address. The page with “opt-in” slug validates the parameters with submission stored in WordPress database and initiates sending of final emails to recipient set in “All Opt-In Forms” settings. If validation fails or when submission has expired, no emails are sent. If there are no specified parameters in the URL, visitors of the “opt-in” page are redirected to “404” page.
Plugin translation
Double Opt-In can be easily translated. It is released with the translation to Polish language.
Category rankings
As of Jul 8, 2026- Accessibility#0of 91Top 1%
- Contact#0of 148Top 1%
- Contact Form#0of 592Top 1%
- Email#0of 711Top 1%
- Multilingual#0of 59Top 1%
See 90-day rank history for each category
Track daily rank changes, category shifts, and position volatility.
Competitors & alternatives
Double Opt-in for CF7doesn't have curated competitor matchups yet. Other tracked email apps on WordPress:
Where Double Opt-in for CF7 stands in the Email category
Double Opt-in for CF7 ranks #0 of 711 apps in the Email category, placing it in the top 1% of the listing.
Frequently asked questions
What is Double Opt-in for CF7?
Double Opt-in for CF7 is an app for WordPress. It currently holds a 3.5-star rating from 2 merchant reviews, and AppRanks has been tracking its public marketplace data on a daily refresh cycle. It is listed under the Email category on AppRanks, where you can see its current category position, review-velocity trend, and how it compares against the top alternatives in the same space. Developed by Krzysztof Busłowicz.
Who uses Double Opt-in for CF7?
Currently around 100 active stores have installed Double Opt-in for CF7. Its review base is still building, which usually maps to early-stage merchants and stores piloting a new workflow. It is part of the Email category on WordPress.