Replying to messages

From the Inbox you can manually reply to any conversation: text, images, PDF documents, and audio. The reply is sent through the conversation's channel.

Steps

1Open the conversation in the Inbox.
2Type your message in the bottom text field.
3To send text: type and press Enter or click the send icon.
4To send a file: click the attachment icon (paperclip) → select the file from your device.
5The file is uploaded and sent through the conversation's channel.

Reference

Text: Supports emojis. Enter sends. Shift+Enter = new line.
Images: Formats: JPG, PNG, WebP. Max size: 5 MB (WhatsApp limitation).
Documents: PDF up to 100 MB. File name visible to the recipient.
Audio: .ogg, .mp3, .m4a files. Only WhatsApp supports native voice notes.
Instagram: Text and images only. PDF and audio not available in Instagram DM.
upload vs post: Attachments use apiClient.upload (multipart), not apiClient.post. This is internal to the API client.

Common errors

Attachment not sending: Check the file format and size. WhatsApp rejects files outside its limits.
«Error uploading file»: The server didn't receive the file. Check your connection and retry.
Message sent but not arriving: Check the delivery status (ticks) in the conversation.

Next step

Learn to interpret message delivery status.