| Options | HOME | Professional | Comments |
| Executive file | + | + | The Home Edition cannot be used in commercial purposes. |
| Spell checker dictionaries | - | + |
For the Home Edition spell checker dictionaries can be downloaded separately, they are included in the International Pack. In the Professional Edition the dictionaries are a part of the standard installation file. |
| Multilingual interface | - | + | For the Home Edition the multilingual interface can be downloaded separately, they are included in the International Pack. In the Professional Edition the multilingual interface is a part of the standard installation file. |
| Possibility for hardware authentication with mail servers | - | + | The Bat! v3.5 and later support eToken Pro and iKey1000. In future The Bat! will support other hardware tokens. |
| Message base encryption | - | + | On-The-Fly encryption is available since version 3.5. |
| Biometric authentication | - | + | Biometric Authentication is available with BatPost Server through Dekart BIO API. |
| Smiles | + | + |
Smiles are small graphical images used to express feelings and emotions when words fail. Every smiley possesses its own text code which turns into a picture when the message is viewed. |
