In Tact you can change your email signature to match the same signature you have set for either Exchange or Google. Here are a few steps on how to set up your email signature:
1. Open Tact and go to Settings
2. Select Email Settings
3. You can edit your Email Signature by changing the Text under the line beneath Exchange
4. Try to send a email and see how it looks!
Awesome! You've successfully set up your email signature. We are working on being able to add images to your Tact email signature so stay tuned for a future update.