How to send bulk SMS like mail merge.? Do we need to write any program on the excel sheet(my customer list is more than 10000 in excel sheet)?

There are certain Mobile and PC apps, mostly used for SMS marketing. They are easy to use and SMS can be sent to all or customized contacts. Nearly all of the apps are paid onse. you need to buy.

Mail merge tags can be used to send personalised messages to multiple recipients. The TextMagic SMS web app has five default tags (first name, last name, company name, mobile phone number and email address). Here’s how you can create and use mail merge tags for sending customised bulk SMS messages:

Step #1: Create your own mail merge templates using custom fields from the Contacts -> Custom Fields tab. 

Mandatory step: When importing contacts to your TextMagic account, you must merge the fields from your file with your TextMagic custom fields and fill out any new custom fields.

Step #2: As soon as you finish adding relevant data to all your custom fields, you can begin crafting your bulk SMS. Test your mail merge name tags by sending a mass text. Click on New message, add recipients and write your message using SMS tags. Click Send.

Step #3: Go to the History tab to view all your sent messages. You will notice that the mail merge tags are replaced with relevant data, thus personalising your mass text.

We use to deal with some marketing agencies ( Approved by Etisalat) they have special applications and huge database of customers i am curious also how they are doing it we use send them list of hundreds of customers and they use to send to more than 15k i am wondering how they are doing it.