Description
smartEngin MeetMix lets visitors book appointments directly on your website. You define your appointment types and weekly hours; visitors pick a free slot and receive a confirmation with a calendar file and a link to cancel or reschedule — no customer account needed.
What you get
- Appointment types — phone call, online meeting, you visit the customer, the customer visits you. Each with its own duration, buffer times, lead time and booking horizon, and optionally its own weekly hours.
- A booking page you place with a shortcode. Visitors see your real availability in their own time zone.
- Double bookings are prevented by the database, not by a lucky guess. Two visitors can click the same slot at the same moment; only one gets it.
- Emails that arrive — confirmation with a calendar file, notification to you, reminders before the appointment. Every template can be edited, and reminders run without a paid service.
- Your own form fields next to the seven standard ones — text, several lines, email, phone, address, a choice list, a tick box or a date of birth (entered with the date picker of the browser). Per appointment type you decide what is required, optional or hidden.
- Your customer can cancel or reschedule through a link that contains nothing but a random value. No account, no password.
- Your own calendar in the admin area — year, month, week and day. Create an appointment by clicking into it, drag it to a new time, cancel it — and you always see the email to your customer before it goes out.
- Absences with their own colour, an optional yearly repeat, and a switch for whether they block bookings at all — a birthday should not close your working day.
- Public holidays for all sixteen German federal states, each one individually selectable.
- Privacy built in: no IP address is ever stored, old bookings are anonymised or deleted on a schedule you set, and the customer link never carries a name or an email address.
- Works with multilingual sites. The language a visitor booked in is stored with the booking, and every email to that person switches to it — no forced site language, so WPML, Polylang and TranslatePress keep working.
- The colours follow yours. One accent colour, used everywhere.
- A manual inside the admin area, and a log that tells you whether an email really went out.
The Pro extension
smartEngin MeetMix Pro is a separate plugin. It adds Google Calendar in both directions with an own Google Meet room per appointment, Telegram messages to your phone, several booking pages, events with a waiting list, paid appointments through the free smartEngin buy plugin, a minimum age per appointment type, and your calendar on your phone. Nothing in this plugin is locked or waiting to be unlocked — the free plugin is complete in itself, and the extension brings its own code.
What it adds, in one line each: Google Calendar in both directions · an own Google Meet room per appointment · Telegram messages to your phone · several booking views · events with seat limits and a waiting list · paid appointments through the free smartEngin buy plugin · a minimum age per appointment type · your calendar on your phone. Details: smartengin.de/meetmix
External services
This plugin contacts no external server at all. Nothing is loaded from a CDN, no data leaves the visitor’s browser to a third party, and no IP address is stored — the spam protection turns it into a one-way value that expires after an hour. The Pro extension is where Google and Telegram come in, and it asks for those credentials itself.
Bundled library
FullCalendar 6.1.19 (fullcalendar.io, MIT licence) is shipped inside the plugin so that no visitor request ever goes to a CDN. The readable source of the shipped files is at github.com/fullcalendar/fullcalendar; the exact files, versions and download addresses are documented in assets/vendor/fullcalendar/LIESMICH.txt inside the plugin.
Screenshots
Installation
- Install the plugin and activate it.
- Open smartEngin MeetMix Appointment types and create your first type — a phone call, a visit, an online meeting. Duration, buffer times and how far ahead it can be booked belong to the type.
- Open Availability and set your bookable hours per weekday. Absences and German public holidays are on the same page.
- Put the shortcode
[smartengin_termin]on any page — that is your booking page.[smartengin_booking]does the same thing under an English name. - Check Settings General for your company name and the address that notifications are sent to.
One thing worth checking once: under Settings General of WordPress itself, your time zone should be a city (for example Berlin), not a fixed offset such as UTC+2. A fixed offset knows no daylight saving time, and every appointment would shift by an hour in autumn. The plugin warns you about this in red if it finds it.
FAQ
-
Does the visitor need an account?
-
No. Booking asks only for the fields you chose. The link to cancel or reschedule contains a long random value and nothing else — no name, no email address, no booking number.
-
What happens if two visitors click the same slot at the same second?
-
One gets it, the other is told the slot has just been taken. This is decided by the database through a unique key per time unit, not by a check in PHP that could be a moment too late.
-
Do the reminders work without a paid service?
-
Yes. They run on WordPress’ own scheduled tasks, and they catch up on whatever is due instead of demanding an exact moment — so a quiet site does not silently skip them. Every reminder is sent once, recorded in the database. WordPress’ scheduler only runs when somebody visits your site; if your site is quiet for long stretches, set up a real cron job at your host. The plugin shows you under Settings Reminders whether the scheduler is healthy, and how to set that up.
-
Is any personal data sent anywhere?
-
No. The plugin contacts no external server. No IP address is stored — the spam protection turns it into a one-way value that cannot be turned back and expires after an hour. Under Settings Privacy you set how long booking data is kept and whether old bookings are anonymised or deleted.
-
Does it work on a multilingual site?
-
Yes, and it deliberately does not force a language. The language a visitor booked in is stored with the booking, and every email to that person switches to it — including the reminder that goes out from a scheduled task. WPML, Polylang and TranslatePress keep working, because nothing here hooks the site locale. Your own wording (email templates, the names of your appointment types) is never machine-translated.
-
Can I charge for an appointment?
-
Not with this plugin alone. Paid appointments need the Pro extension together with the free smartEngin buy plugin, which handles checkout, invoice, coupons and refunds. There is deliberately no second payment system in here. You can enter a price without them, but nothing is ever charged, and the plugin says so on the appointment type.
-
Which third-party code ships with the plugin?
-
One library: FullCalendar 6.1.19 (MIT). It is shipped inside the plugin instead of loaded from a CDN, so that no visitor request ever leaves your site. Its readable source is at github.com/fullcalendar/fullcalendar, and
assets/vendor/fullcalendar/LIESMICH.txtin the plugin names the exact files and where they came from. -
What happens to my data if I delete the plugin?
-
Nothing, unless you ask for it. Deleting the plugin keeps your appointments and settings, so an accidental click never costs you your bookings. There is a switch under Settings Privacy if you really want everything removed.
Reviews
There are no reviews for this plugin.
Contributors & Developers
“smartEngin MeetMix” is open source software. The following people have contributed to this plugin.
Contributors
Translate “smartEngin MeetMix” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
0.43.0
- Works together with smartEngin Analytics. Every blocked attempt on your booking form, the AI connection and (with Pro) the event sign-up and the phone calendar is now also reported to smartEngin Analytics, where it appears under Security with country, map and an estimate of bot or human. Nothing is sent anywhere else, and no email address, PIN or link is ever part of the report.
- Also reported to smartEngin Analytics, but not counted in the overview: links to the customer page or to rescheduling that never existed.
- With smartEngin Analytics active, the view “Blocked attacks” points there. The numbers in MeetMix keep counting, so a Telegram alert about many attacks still works. Without Analytics nothing changes.
0.42.4
- Next to a date-of-birth field in an appointment type, a quiet note now says that a minimum age comes with MeetMix Pro. No link, no button.
0.42.3
- Fixed for good: browsers that fill in forms for you could still trip the spam trap. The invisible field is now read-only, so neither the browser’s autofill nor a form-filling helper can put anything into it — only a program writing into the page directly.
0.42.2
- Fixed: a real visitor could be turned away with “Your request looks automated”. The invisible field that catches bots was named like a website address, and some browsers filled it in when they auto-filled the booking form. It now has a name no browser fills in.
0.42.1
- The minimum age of an appointment type is now any number of years instead of a fixed choice of 16, 18 or 21 (the number is set with the Pro extension; 0 means no limit, and every existing appointment type stays at 0).
- The manual and the plugin description now explain the new “Date of birth” field type, and that a minimum age per appointment type comes with the Pro extension.