oozami

Oozami Booking is a clean, lightweight appointment booking plugin for WordPress. It is designed for service providers — hairdressers, therapists, coaches, tutors, freelancers, small clinics, photographers, consultants — who need a simple, reliable booking flow on their own site without recurring SaaS fees.
You define your services, your employees, your opening hours, and you embed a booking form on any page with a shortcode or an Elementor widget. Customers pick a service, a date, a time slot, fill in their details, and receive a confirmation email with an “Add to Google / Outlook calendar” link and a personal management page where they can view or cancel their appointment.
<h4>Core features</h4>
<ul>
<li>Public booking form (shortcode and Elementor widget)</li>
<li>Service catalogue with duration, price, color and active/inactive toggle</li>
<li>Employee management with per-service assignment</li>
<li>Weekly opening hours, plus blocked dates for holidays</li>
<li>Automatic conflict detection (single-resource mode or multi-employee mode)</li>
<li>Pending / confirmed / cancelled booking workflow</li>
<li>Optional auto-confirmation, or manual approval from the admin</li>
<li>HTML confirmation email with .ics calendar attachment</li>
<li>Cancellation email when an admin refuses or cancels a booking</li>
<li>Customer “My appointment” page where customers can review and cancel their booking via a secure token link</li>
<li>Customizable primary color and font family for emails and the booking widget</li>
<li>Multilingual-ready (translation-ready, <code>oozami-booking</code> text domain)</li>
<li>Clean uninstall: all plugin tables and options are removed on uninstall</li>
<li>GPL-compatible, no paid dependency required</li>
</ul>
<h4>How emails work</h4>
Oozami Booking sends emails through WordPress’ built-in <code>wp_mail()</code> function. This is the standard approach used by virtually every booking and form plugin on WordPress.org. If your hosting environment does not have a working SMTP server configured, emails will silently fail — this is a hosting concern, not a plugin issue.
The plugin’s settings page includes a built-in “Send test email” button so you can verify delivery in one click. If the test fails, simply install an SMTP plugin (WP Mail SMTP, FluentSMTP, Post SMTP…) and connect it to a transactional email provider such as Brevo, SendGrid, Mailgun, Postmark or your host’s SMTP. The last delivery error is shown directly in the settings page to help diagnose problems.
<h4>Pro extension (optional)</h4>
A Pro add-on is available for advanced features (online payments, coupons, custom fields, etc.). The free version is standalone. 
Learn more: https://oozami.be/portfolio/easybook-pro/
<h4>External services</h4>
Oozami Booking does not connect to, or send any data to, any external service. All booking data stays in your own WordPress database.

Oozami Booking

Online appointment booking for WordPress: services, employees, availability, confirmation emails, and an Elementor widget.

sagenda

📅 Sagenda is an online Scheduling software that helps your clients fix appointments and meetings with you online. The Sagenda account allows you to manage an unlimited number of reservations and different calendars. You only pay for additional modules such as sending SMS, online payment for your customers, <a href="https://sagenda.net/ModuleCenter" title="Check the module center and pricing" rel="nofollow ugc">more information in your Module Center</a>. And the best thing about it is that you may have an unlimited history. Our users always come first; that’s why Sagenda doesn’t display ads!
<a href="https://iteration.atlassian.net/servicedesk/customer/portal/2" title="We love hearing from you!" rel="nofollow ugc">Contact & Support</a> | <a href="https://www.youtube.com/sagenda" title="Get a look at our tutorials!" rel="nofollow ugc">YouTube Chanel</a> | <a href="https://sagenda.net/Accounts/Register" title="Open an account now!" rel="nofollow ugc">Open an account</a>
This is an “Online Booking System” which gives customers the opportunity to choose the date and the time of an appointment according to one’s own preferences and the booking can now be done online.
Using this WP plugin is a better way to display your booking on your WP frontend than using an iFrame. Using this Plugin will required a Sagenda’s account. To create an account please visit: <a href="https://sagenda.net/Accounts/Register" rel="nofollow ugc">https://sagenda.net/Accounts/Register</a>
You can use PayPal as payment gateway to make your customers pay for bookings. They can pay via PayPal account but also via direct credit card payment (without creating a PayPal account). Following cards are accepted : Visa, MasterCard, American Express, Discover, JCB, Diner’s Club, EnRoute…
<a href="https://apps.apple.com/lt/app/sagenda/id1475353588" title="Scheduling iOS" rel="nofollow ugc">Get our iOS app</a> | <a href="https://play.google.com/store/apps/details?id=info.iteration.sagenda" title="Scheduling Android" rel="nofollow ugc">Get our Android App</a>
NOTE: You need to register an account on the Sagenda site and then you will get an authentication code which you will use to validate your Sagenda plugin.
Shortcode 
You can use Sagenda as shortcode in any page or plugin : 
 [sagenda-calendar-wp]
You can force the Calendar to display only one bookable item. Please then use the shortcode like this : 
 [sagenda-calendar-wp fixedbookableitem=”x”] 
where x is the “id” of your bookable item. To know the id of your bookable item, you can just go to your bookable item list : <a href="https://sagenda.net/BookableItems/List" rel="nofollow ugc">https://sagenda.net/BookableItems/List</a> and select “edit”. You can then copy the ID with the copy button. 
You can also use this feature with URL query parameter such as adding ?fixedbookableitem=”x” to your URL. Please don’t use both shortcode and query parameter “fixedbookableitem” in the same time.
You can choose the default view 
 [sagenda-calendar-wp defaultView=”x”] 
where x is the “month”, “week”, “workWeek”, “day”, “agenda”.
You can also use timeline : “timelineDay”, “timelineMonth”, “timelineWeek”, “timelineWorkWeek”.
You can unactivate view(s) : 
Those views are enabled by default, but you can remove them : 
 [sagenda-calendar-wp removeMonthViewButton=”true” removeWeekViewButton=”true” removeWorkWeekViewButton=”true” removeDayViewButton=”true” removeAgendaViewButton=”true”] 
This will simply remove the corresponding button to switch from a view to another one. Please understand you can’t remove all views (at least one should be allowed to load). If you remove the “month” view, you have to define a new default : defaultView=”x”.
You can activate view(s) : 
Those views are disabled by default, if you want you can add them. Anyway very few people need a timeline view, think twice before adding it. 
 [sagenda-calendar-wp removeTimelineDayViewButton=”false” removeTimelineMonthViewButton=”false” removeTimelineWeekViewButton=”false” removeTimelineWorkWeekViewButton=”false”]
Prerequisites 
SAGENDA WP PLUGIN REQUIRE ⚠️ PHP 5.6 or 7.x or 8.x ! 
⚠️ FOR YOUR OWN SAFETY DON’T USE PHP VERSION OLDER THAN 8 THERE IS NO SECURITY PATCH ⚠️ 
<a href="https://php.net/supported-versions.php" rel="nofollow ugc">https://php.net/supported-versions.php</a>
Sagenda WP plugin require the PHP “Curl extension” to be activated on your hosting to call web services.

Sagenda – Scheduling Calendar

This plugin is the new mobile calendar (and list) view of Sagenda
📅 Sagenda is an online booking / scheduling / reservation module that helps your cli …

Oozami Booking vs Sagenda – Scheduling Calendar