Integrate WhatsApp links into Sigsync Office 365 email signature

Sigsync Office 365 email signature service allows you to easily integrate WhatsApp links into your email signature. When a recipient clicks the link in your signature, it instantly opens a WhatsApp chat with you. If they have the app installed, the chat opens directly in WhatsApp. If not, the link opens a browser, allowing them to start the conversation through WhatsApp Web. This feature makes it simple for recipients to connect with you directly from your email signature.

WhatsApp links in email signatures can be beneficial in various scenarios:

• If your company uses WhatsApp for handling customer inquiries or sales queries, including these links in your email signatures makes it easy for clients to get in touch quickly.
• Adding WhatsApp links for internal communications helps streamline messaging between team members, whether for all employees or select individuals, facilitating faster and more efficient collaboration.
• WhatsApp links offer a convenient way to transition conversations from a desktop email app to a mobile phone, ensuring you can continue important discussions while on the move.
• For teams or clients involved in event planning, WhatsApp links can provide a quick way to coordinate details and share updates in real time.
• If you manage a large number of clients, having a WhatsApp link in your signature allows clients to contact you directly, providing a more personalized and immediate communication channel.
• Including WhatsApp links in your signature can simplify follow-ups on initial inquiries or previous conversations, making it easier to maintain ongoing communication with prospects or clients.

WhatsApp Link Format

WhatsApp link is in one of the below formats:

https://api.whatsapp.com/send?phone={PhoneNumber}&text={customMessage}

Or:

https://wa.me/{PhoneNumber}?text={customMessage}

Here, ‘{PhoneNumber}’ is the WhatsApp-associated number, and ‘{customMessage}’ is the default text that will appear in the chat message box. Recipients can either use or modify this message.

Ensure the phone number in the link consists of digits only, without any special characters. For example, if a user’s number is: +1 (700) 666-0333

The corresponding WhatsApp link will be:

https://api.whatsapp.com/send?phone=17006660333

Or:

https://wa.me/17006660333?text=Hi. I’d like to subscribe your Email signature service

As spaces are not supported in URLs, you should copy and paste this link into your browser’s address bar and press Enter to convert it to the correct format automatically:

https://wa.me/17006660333?text=Hi!%20I%20came%20here%20via%20the%20link%20in%20your%20email%20signature

Typically, users’ phone numbers are formatted with spaces and special characters for readability. To use the phone numbers updated in your Entra ID (Azure AD) attributes, you need to remove all non-numeric characters. To maintain a user-friendly format, convert the MobilePhone numbers as explained in the below section and assign them to a custom attribute.

Format MobilePhone number

The following method processes the ‘MobilePhone’ values of all users, reformats the numbers, and updates the corresponding mailboxes' custom attributes with the new format. In this example, CustomAttribute10 is used, but you can choose any custom attribute number that suits your needs.

If WhatsApp is used by only a few specific users, you might want to limit the scope of the users in the script’s initial line or set up a signature rule specifically for those users. If you prefer not to use PowerShell, you can manually assign the MobilePhone numbers and update the custom attributes in the Exchange admin center.

Execute the below Windows PowerShell commands (Run as administrator):