Changelog

Route: https://developers.sendinblue.com/reference/sendtransacsms
For the Transactional SMS route, organisationPrefix is now added, which will be used as prefix within
the message content. This field is only mandatory for U.S. Carriers. +1 Country Code

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{
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	"sender":"Tester",
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	"recipient":"+18448614669432",
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	"content":"Hello, This is the Test message.. from beta.",
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	"type":"transactional",
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  "organisationPrefix":"Sendinblue"
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}

Route: https://developers.sendinblue.com/reference/createsmscampaign-1
Route: https://developers.sendinblue.com/reference/updatesmscampaign-1
For POST sms campaign creation and PUT sms campaign update, organisationField and unsubscribeInstruction are required for U.S Carriers.These two field are optional for others.
organisationPrefix - Brand name or organisation Name eg- sendinblue
unsubscribeInstruction- Instruction to unsubscribe from sms campaigns. Must have STOP keyword,

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{
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    "name":"Test Campaign",
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	"sender":"Tester",
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	"content":"This is Test sms camp",
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	"recipients":{
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		"listIds":[2],
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		"exclusionListIds":[]
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	},
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    "organisationPrefix":"Sendinblue",
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    "unsubscribeInstruction":"send STOP to unsubscribe campaign"
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}