Certified Code Help Center

Start Chat Buttons: Platform URL Guidelines (Contact Link Formats)

Use this guide to enter the correct Desktop and Mobile contact link formats for each platform in the app.

February 23, 2026

General rules

Always include the correct protocol (https://, tel:, sms://, mailto:, etc.).
For phone-based links, use international format.
If a platform supports prefilled messages, URL-encode the message text.
Keep Desktop and Mobile links the same unless you need platform-specific behavior.

Copy-ready formats by platform

WhatsApp

Desktop: https://web.whatsapp.com/send?phone=<PHONE_E164_NO_PLUS>&text=<ENCODED_TEXT>
Mobile: https://wa.me/<PHONE_E164_NO_PLUS>/?text=<ENCODED_TEXT>
Example:
- https://web.whatsapp.com/send?phone=15551234567&text=Hello%20there
- https://wa.me/15551234567/?text=Hello%20there
Notes:
- Use digits only for <PHONE_E164_NO_PLUS> (no +, spaces, or dashes).

Telegram

Desktop/Mobile: https://t.me/<USERNAME>?text=<ENCODED_TEXT>
Example: https://t.me/mybrand?text=Hi%20there
Notes:
- Use username without @.

Facebook Messenger

Desktop/Mobile: https://m.me/<PAGE_ID_OR_USERNAME>?text=<ENCODED_TEXT>
Example: https://m.me/myPageName?text=Hello

Instagram

Desktop/Mobile: https://ig.me/m/<USERNAME>
Example: https://ig.me/m/wix

Facebook

Desktop/Mobile: https://www.facebook.com/<PAGE_OR_PROFILE>/
Example: https://www.facebook.com/wix/

TikTok

Desktop/Mobile: https://www.tiktok.com/@<USERNAME>
Example: https://www.tiktok.com/@wix

X (Twitter)

Desktop/Mobile: https://x.com/<USERNAME>
Example: https://x.com/wix

Discord

Desktop/Mobile: https://discord.com/invite/<INVITE_CODE>
Example: https://discord.com/invite/devs-on-wix

LinkedIn

Company: https://www.linkedin.com/company/<COMPANY_SLUG>
Personal: https://www.linkedin.com/in/<PROFILE_SLUG>
Example: https://www.linkedin.com/company/wix-com

Snapchat

Desktop/Mobile: https://www.snapchat.com/add/<USERNAME>
Example: https://www.snapchat.com/add/mybrand

SMS

Desktop/Mobile: sms://<PHONE_E164_NO_PLUS>?body=<ENCODED_TEXT>
Example: sms://15551234567?body=Hi%20there
Notes:
- Message body is optional.

WeChat (Weixin)

Desktop/Mobile: weixin://dl/chat?<WECHAT_ID>
Example: weixin://dl/chat?mywechatid

Skype

Desktop/Mobile: skype:<SKYPE_USERNAME>?chat
Example: skype:live.mycompany?chat

Vkontakte (VK)

Desktop/Mobile: https://vk.com/<USERNAME_OR_GROUP>
Example: https://vk.com/mybrand

Slack

Workspace invite: https://join.slack.com/t/<WORKSPACE>/shared_invite/<INVITE_CODE>
Channel deep link (if you use one): slack://channel?team=<TEAM_ID>&id=<CHANNEL_ID>
Example: https://join.slack.com/t/acme/shared_invite/zt-abc123

Email

Basic: mailto:<EMAIL_ADDRESS>
With subject/body: mailto:<EMAIL_ADDRESS>?subject=<ENCODED_SUBJECT>&body=<ENCODED_BODY>
Example: mailto:[email protected]?subject=Help&body=Hello

Viber

Public account: viber://pa?chatURI=<PUBLIC_ACCOUNT_URI>&text=<ENCODED_TEXT>
Phone chat: viber://chat?number=<PHONE_E164_NO_PLUS>&text=<ENCODED_TEXT>
Example:
- viber://pa?chatURI=mybrand&text=Hello
- viber://chat?number=15551234567&text=Hello

Phone

Desktop/Mobile: tel:+<PHONE_E164_WITH_PLUS>
Example: tel:+15551234567

LINE

Desktop/Mobile: https://line.me/R/ti/p/<LINE_ID>
Example: https://line.me/R/ti/p/mylineid

Common mistakes to avoid

Missing protocol (for example, t.me/myname instead of https://t.me/myname)
Using spaces in phone numbers
Not URL-encoding message text
Using a profile URL that is not publicly accessible
Mixing username format (for example adding @ where not expected)

Quick validation checklist

Before saving:

Link opens directly in a new tab/device.
Username/ID is correct and public.
Message parameter (if used) is encoded.
Mobile link field is set (or intentionally uses the same link as Desktop).