About this plugin
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. 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
io, MIT licence) is shipped inside the plugin so that no visitor request ever goes to a CDN. txt inside the plugin.