Update time: 2021/12/06 05:41:37


Type Description
Content The maximum length of the body field is 5000 characters.
Image messages No limit. We recommend using the feature based on specific scenarios.
Voice messages Default recording duration: 120s (supporting user-defined configuration). No restriction for file size. We recommend restricting upon scenarios.
Video message No restriction for video duration and file size. We recommend restricting upon scenarios.
File messages No restriction for SDK uploading size. Max. size of server uploading file: 15 M. We recommend restricting upon scenarios.
Offline messages For peer-to-peer chat: Issue recent 5000 offline messages within 30 days (max. 100 for a single session).
For team chat: Issue offline messages within 30ays (max. 100 for a single session).
[Note]: The chat room does not support offline message.
Roaming messages Automatic roaming for recent 100 sessions within 7 days and recent 100 messages for each session.
Duration of history for one-to-one chat / team chat Free edition: 7 days; professional edition: 1 year, extensible to max. 3 years (value-added function)
Duration of history for chat room 10 days
NOS Cloud Storage Free edition: 1 TB; professional edition: 1 TB, extensible to max. 1000 TB (value-added function)

For information on the value-added service pricing, see Pricing.

User relationship

Feature Description
Number of friends A single user can have up to 3,000 friends.

User Profile

Parameter Type Description
accid String User account. The length is up to 32 characters. The account must be unique in APP.
name String User nickname. The length is up to 64 characters.
icon String User icon. The length is up to 1024 characters.
sign String User signature. The length is up to 256characters.
email String User email. The length is up to 64 characters.
birth String User birthday. The length is up to 16 characters.
mobile String User mobile. The length is up to 32 characters. Only domestic phone numbers are supported.
gender int User gender. The value of 0 indicates the gender is unknown. The value of 1 indicates a male. The value of 2 indicates a female; Other values indicate an error parameter.
ex String Extension field of a user profile. The maximum length is 1024 characters. Users can extend the field as required. We recommend packing into JSON string.

Team features

Feature Description
Team capacity 200 members/team. No distinction between the common team and the advanced team. Extensible to max. 500 members/team (value-added function)
Number of created groups Advanced team: 100 groups/person (Free edition: 50 groups/person), extensible to max. 2000 groups/person (value-added function). No restriction for the common team.
The number of groups users can join Each user can join up to 5000 groups.

For charges of the above value-added functions, please see Description of rates

Chat Room Features

Feature Description
Capacity No restriction
The number of groups users can create Each user can create 200 chat rooms. To have advanced service, contact our customer manager.
Users can enter into the same chat room simultaneously from multiple clients. Users are allowed to enter into the chat room simultaneously from one client in default. User console supports configuration.

To configure user console, log in to

Event Subscription (Online Status)

Feature Description
Subscription limit Users can subscribe to online status of specific groups. Each account can subscribe to up to 3000 accounts.
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  • Messaging
  • User relationship
  • User Profile
  • Team features
  • Chat Room Features
  • Event Subscription (Online Status)