Introduction
Dat-Mail periodically undergoes updates that effect document uploads to Postal One.
For Full Service customers operating Dat-Mail to upload mail.dat files, the version type needs to be updated within Dat-Mail's settings. If a mail.dat file has been uploaded after this update, it will need to be re-uploaded after the version is updated.
Procedure
| 1. Launch the Dat-Mail application. | ![]() |
| 2. Open the "File" menu, and hover over "Program Settings". | ![]() |
| 3. Click "Program setup". | ![]() |
| 4. Select the Export tab. | ![]() |
| 5. Click the "Export to version" drop-down menu. | ![]() |
| 6. Select "19.1 (current)". | ![]() |
| 7. Hit "OK". | ![]() |
| 8. At this point, re-upload any previously uploaded dat.mail files. |






