We can use the Email > Campaigns module for A/B testing. 
  1. Log into NetCommunity.
  2. Select Email > Campaigns.
  3. Select New Campaign > Add campaign name > Save.
  4. Click the campaign and select New Appeal > Next.
  5. Insert target list, seed lists, exclusion lists.
  6. Add Messages > Send tests.

For more information on email campaigns, please refer to our email guide