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POST
/
{instance}
/
send-text-safe
cURL
curl --request POST \
  --url https://app.hypersender.com/api/whatsapp/v1/{instance}/send-text-safe \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "chatId": "[email protected]",
  "text": "Hi there!",
  "reply_to": "string",
  "link_preview": false,
  "link_preview_high_quality": false
}'
{
  "key": {
    "remoteJid": "[email protected]",
    "fromMe": true,
    "id": "3EB0CD3810439716606547"
  },
  "message": {
    "extendedTextMessage": {
      "text": "Hi there!"
    }
  },
  "messageTimestamp": 1741359489,
  "status": "PENDING"
}

​
Send Text Message Safe

The Send Text Safe endpoint functions similarly to the standard send-text endpoint but with enhanced safety features designed specifically to protect your WhatsApp number from being blocked or flagged for suspicious activity.
  • WhatsApp has strict policies against automated messaging, and using the standard send-text endpoint too frequently can lead to your number being flagged or blocked.
  • This endpoint is designed to mimic human behavior more closely, making it less likely for WhatsApp to detect automated activity.

​
It:

  • Automatically calculates the appropriate delay between messages based on text length, by adding a few seconds for thinking/reviewing before sending
  • Simulates typing behavior in WhatsApp before sending the message
  • Significantly reduces the risk of your WhatsApp number being blocked due to automated messaging patterns
  • Reduces the risk of being flagged for automated behavior
If the text has a link - it generates a preview for that link. You can adjust the behaviour by setting
  • link_preview: true - to enable link preview
  • link_preview_high_quality: true - to enable high-quality link preview
send-text send link preview
You can still send messages directly with send-text endpoint, but we highly recommend using this endpoint for regular messaging operations to maintain a more natural communication pattern, and keep your whatsapp number safe from being blocked.

​
Quick Demo

Learn how to use Hypersender whatsapp API to send a message using Postman: Demo Link

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Headers

​
Accept
string

application/json

Example:

"application/json"

​
Content-Type
string

application/json

Example:

"application/json"

Path Parameters

​
instance
string
required

Instance UUID copied from hypersender dashboard

Example:

"{{ instance_id }}"

Body

application/json
​
chatId
string
required

Contact number - learn what is chatId

Example:

"[email protected]"

​
text
string
required

Text Message

​
reply_to
string

Reply to message id

​
link_preview
boolean

Link Preview

​
link_preview_high_quality
boolean

Link Preview High Quality

Response

Successful response

​
key
object
​
message
object
​
messageTimestamp
string
​
status
string
⌘I