Automatically incremented read-watermark

A system comprising:

• a memory;
• and
• at least one hardware processor to perform operations comprising:
• maintaining data objects with identification numbers tracking message display status;
• detecting a trigger event associated with a data object from among the data objects;
• automatically updating an identification number associated with the data object responsive to the trigger event;
• and
• synchronizing a read-watermark associated with the data object displayed across a plurality of client devices based on the updated identification number.

A non-transitory machine-readable storage medium comprising instructions that, when executed by one or more processors of a machine, cause the machine to perform operations comprising:

• maintaining data objects with identification numbers tracking message display status;
• detecting a trigger event associated with a data object from among the data objects;
• automatically updating an identification number associated with the data object responsive to the trigger event;
• and
• synchronizing a read-watermark associated with the data object displayed across a plurality of client devices based on the updated identification number.