Answer 1

If you are looking for a platform that will allow you to send bulk SMS messages to your customers, especially in United Kingdom and India, then Textlocal is the perfect choice!
Textlocal is a SMS gateway for businesses which allows you to send text messages in bulk. Currently Textlocal is available in two variations:

1. Textlocal.com
If you are looking for a SMS platform at an international level (and specifically for United Kingdom) then Textlocal.com is the right fit for you. UK customers will be able to send bulk SMS at way cheaper rates via Textlocal. 

2. Textlocal.in
Textlocal.in provides the service of sending bulk text messages for businesses in India. However, Textlocal.in provides services only in India and if you have a Textlocal.in account then you would be able to send text message only in India. For sending worldwide messages you would have to use Textlocal.com 

Usages:
https://repairdesk.uservoice.com/knowledgebase/articles/1163629-how-can-i-enable-textlocal-sms-api