Sharing a modified file

1. A method comprising:

in response to receiving a sharing input from a local user at a local client device, sending a file from the local client device to a recipient client device;

in response to sending the file, and after sending the file, storing a sharing record on the local client device, the sharing record identifying the file and the recipient client device;

in response to receiving modification input, from the local user at the local client device, that modifies the file, determining that the sharing record identifies the file and the recipient client device and indicates that the file has been shared; and

based on determining that the sharing record identifies the file and the recipient client device and indicates that the file has been shared, initiating sending of at least a portion of the file to the recipient client device, the sharing record indicating that the file was previously shared by the local user with the recipient client device.

2. The method of claim 1 , wherein initiating the sending of at least the portion of the file includes prompting the local user to send at least the portion of the file to the recipient client device.

3. The method of claim 1 , wherein an application sending the file in response to the sharing input is different than an application initiating the sending of at least the portion of the file to the recipient client device.

4. The method of claim 1 , wherein the file is stored on the local client device and is inaccessible to the recipient client device.

5. The method of claim 1 , wherein at least the portion of the file includes a modified portion of the file.

6. The method of claim 1 , wherein initiating the sending of at least the portion of the file to the recipient client device includes:

retrieving a contact record associated with the recipient client device;

extracting a contact address from the contact record; and

prompting the local user to send at least the portion of the file to the contact address.

7. The method of claim 6 , wherein the contact address is different than an address to which the local client device sent the file in response to receiving the sharing input from the local user into the local client device.

8. The method of claim 1 , wherein initiating the sending of at least the portion of the file is performed after closing an application via which the modification input was received.

9. The method of claim 1 , wherein the file is not stored on any computing device other than the local client device and the recipient client device.

10. The method of claim 1 , wherein the sharing input includes selection of a sharing button built into a word processor application or a spreadsheet application.

11. The method of claim 1 , wherein the sharing input includes an instruction for an email program to send the file to the recipient client device, the file being attached to an email with an email address associated with a remote user of the recipient client device.

12. A non-transitory computer-readable storage medium comprising instructions stored thereon that, when executed by at least one processor, are configured to cause a local client device to:

in response to receiving a sharing input from a local user at the local client device, send a file from the local client device to a recipient client device;

in response to sending the file, and after sending the file, store a sharing record on the local client device, the sharing record identifying the file and the recipient client device;

in response to receiving modification input, from the local user at the local client device, that modifies the file, determine that the sharing record identifies the file and the recipient client device and indicates that the file has been shared; and

based on determining that the sharing record identifies the file and the recipient client device and indicates that the file has been shared, initiate sending of at least a portion of the file to the recipient client device, the sharing record indicating that the file was previously shared by the local user with the recipient client device.

13. The non-transitory computer-readable storage medium of claim 12 , wherein the file is stored on the local client device and is inaccessible to the recipient client device.

14. The non-transitory computer-readable storage medium of claim 12 , wherein at least the portion of the file includes a modified portion of the file.

15. The non-transitory computer-readable storage medium of claim 12 , wherein the initiating the sending of at least the portion of the file to the recipient client device includes:

retrieving a contact record associated with the recipient client device;

extracting a contact address from the contact record; and

prompting the local user to send at least the portion of the file to the contact address.

16. The non-transitory computer-readable storage medium of claim 15 , wherein the contact address is different than an address to which the local client device sent the file in response to receiving the sharing input.

17. The non-transitory computer-readable storage medium of claim 12 , wherein initiating the sending is performed after closing an application via which the modification input was received.

18. An apparatus comprising:

at least one processor; and

at least one memory device, the at least one memory device comprising instructions stored thereon that, when accessed by the at least one processor, cause the apparatus to:

in response to receiving a sharing input from a local user at a local client device, send a file from the local client device to a recipient client device, the sharing input including at least one of:

selection of a sharing button built into a word processor application or a spreadsheet application; or

an instruction for an email program to send the file to the recipient client device, the file being attached to an email with an email address associated with a remote user of the recipient client device;

in response to sending the file, and after sending the file, store a sharing record on the local client device, the sharing record identifying the file and the recipient client device;

in response to receiving modification input, from the local user at the local client device, that modifies the file, determine that the sharing record identifies the file and the recipient client device and indicates that the file has been shared; and

based on determining that the sharing record identifies the file and the recipient client device and indicates that the file has been shared, initiate sending of at least a portion of the file to the recipient client device, the sharing record indicating that the file was previously shared by the local user with the recipient client device.

19. The apparatus of claim 18 , wherein an application sending the file in response to the sharing input is different from an application initiating the sending of at least the portion of the file to the recipient client device.

20. The apparatus of claim 18 , wherein at least the portion of the file includes a modified portion of the file.