Sending Personalized SMS

Kevin FOO
1 min readApr 13, 2021


Say you have a thousand SMS or more to send and you want to customize the message body to include their name. How would you do it? Sending each and every one manually by hand, typing on your phone would probably take a very long time.

You can actually do it programmatically with an Android phone and a PC/Mac. A continuation from my previous story of sending SMS with ADB, we now add on a script to read a list of recipients’ number and name, substitute the name onto the template and send.

First, we start with the list. Lets name it “list.txt” and it should look something like this


Next, the ruby script to read “list.txt” and send SMS. Lets name it “send_sms.rb”.

def send(strPhoneNumber, strMessage)
`./adb shell service call isms 7 i32 0 s16 "null" s16 "#{strPhoneNumber}" s16 "null" s16 "'#{strMessage}'"`

template='Hello %s'
rows=(`cat list.txt`).split("\n")
for z in 0..rows.length-1
message=template % [name]
puts 'sent to %s' % [name]

To run the script above. Just type

ruby send_sms.rb

If you do not have ruby in your Mac, you can always install it with

brew install ruby

If you do not have Homebrew, you can install it simply by copy/pasting the command found at it’s official site.

Replace the template with your desired message. Change the sleep duration to a longer duration between send if your telco is strict.

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Kevin FOO

A software engineer, a rock climbing, inline skating enthusiast, a husband, a father.