Cautious auto-entry for messaging systems

A cautious auto-completion configured messaging data processing system comprising:

• a messaging client executing in a memory of a computer;
• an addressee master list communicatively linked to the messaging client;
• and,
• cautious auto-completion logic executing on a processor of the computer and coupled to the messaging client and the addressee master list, the cautious auto-completion logic comprising program code enabled to
• generate an auto-completed messaging address,
• compute a similar name set (SNS) value for the auto-completed messaging address according to a similarity of words between words in the auto-completed messaging address and words in another previously auto-completed messaging address, and
• post a warning when the SNS value exceeds a prescribed SNS threshold.

A computer program product comprising a non-transitory computer usable storage medium having stored therein computer usable program code for cautious auto-completion, the computer usable program code which for when executed by a computer hardware device, causes the computer hardware device to perform

• auto-completing a messaging address provided in a messaging client;
• computing a similar name set (SNS) value for the auto-completed messaging address according to a similarity of words between words in the auto-completed messaging address and words in another previously auto-completed messaging address;
• and
• posting a warning upon determining that the SNS value exceeds an SNS threshold.