Guides to direct links
Practical explanations of how WhatsApp, email, calendar, maps, call, SMS and Telegram links work: formats, parameters, common mistakes and copy-ready examples.
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WhatsApp link number format, country by countryCountry code, extra zeros, Argentina's 9 and Mexico's 1. Table with 22 countries.How to put a WhatsApp link in your Instagram bioWhere the link goes, how to order it and which alternatives exist in stories and buttons.wa.me, api.whatsapp.com and whatsapp://: which link to use in each caseFour formats that open a chat, how they differ and which one fails when the app isn't installed.How to add a WhatsApp button to your website (HTML and CSS)Code for an inline button and a floating one, no plugins, with accessibility and contrast notes.Printable WhatsApp QR code: size, contrast and testingSize table by distance, minimum margin, colors that fail and a testing checklist.Pre-filled messages for WhatsApp links: 20 examples by business typeTwenty texts ready to adapt, sorted by industry, and the criteria for writing your own.How to track clicks on a WhatsApp link (and why UTMs aren't enough)Three methods to know which channel each conversation comes from, with no paid tools.
Email, calls and SMS
mailto links: every parameter (subject, CC, BCC and body) with examplesMultiple recipients, CC, BCC, line breaks and what mailto can't do.tel: and sms: links in HTML: syntax, extensions and iPhone vs Android differencesNumber format, extensions with pauses and the syntax difference between iPhone and Android.
Calendar, maps and Telegram
Google Calendar link parameters: dates, time zone and recurring eventsThe eight parameters, the three ways to write the date and how to create recurring events.Google Maps links: search for a place, pin coordinates or open directionsSearch, coordinates, directions and short link: four formats and when to use each.Telegram links: user, channel, bot, private group and shareEight t.me formats: profiles, bots with start, private invites and the share button.