Reply Options and Limitations in Community Messages
Types of replies
Typically, a public reply is available without specific limitations.
Direct message
Available as a response to a direct message from a customer
You can attach a document, an image, or a video to your reply. For more information about the specifications of the supported attachments, see this Facebook help article.
You can reply with free-form messages (up to 24 hours after the last message from the customer) and with WhatsApp templates.
Limitations:
You cannot attach an audio file or a sticker to a reply.
You cannot attach a document when replying from a mobile device. You can attach a document only when replying from a desktop.
You can reply with a free-form message only up to 24 hours after the last message from the customer. After 24 hours, you can reply only with a WhatsApp template (see Use WhatsApp Templates in Community and Use WhatsApp Templates in Care).
You cannot send a poll or reply to a poll that was sent to you. An incoming poll will be displayed as an unsupported attachment.
The maximum number of characters in a reply
The following limits are set by individual platforms. The limits may change without prior warning.
Some characters are counted as 1 byte, some others are counted as 2 or more bytes. For example, "a" is counted as 1 byte, however "á" is counted as 2 bytes.
comment: 8 000 characters
direct message: 2 000 characters
Google Business
comment: 4 096 characters
comment: 2 200 characters
direct message: 1 000 bytes
comment: 3 000 characters
TikTok
comment: 150 bytes
direct message: 4 096 characters
X (formerly Twitter)
comment: 280 characters
Be aware that special data counts towards the limits.direct message: 10 000 characters
YouTube
comment: 10 000 bytes