Send iMessages
Send a real iMessage from a dedicated number with one API call.
Apple publishes no iMessage API for outreach, so teams that want the channel usually end up running an always-on Mac and keeping it alive. Here the line runs on managed infrastructure: you call POST /v2/messages with the line's account_id, and the message leaves as a blue bubble from your dedicated number, not from your personal Apple ID.
Replies, tapbacks and delivery receipts come back on your webhook with platform set to imessage, next to your LinkedIn, email and WhatsApp events, so one handler covers every channel. You can also send files and voice notes once the contact has replied, react with a tapback, show the typing indicator and send read receipts.
Every line is paced for you: a new line warms up over three weeks to 50 new conversations a day, and a contact who does not answer gets at most two follow-ups.
