Mailbird is heavily focused on bringing the best email client to businesses that increase productivity but also make it easy to get through your email workflow daily. There are a few differences for Mailbird Business vs Mailbird Personal at this time but we are likely to add features to the Business version in the near future that will no be available for Personal use.
You can see the most up to date feature comparison here:
Mailbird Feature Comparison
(below on the page, underneath the pricing)
And a listing of the 3rd party apps offered in Mailbird Business and Mailbird Personal in the below article:
Apart from the business apps integrations, Mailbird Business is covered under our terms of service for commercial use. Mailbird Personal is for personal use.
Mailbird Business Customers get 24/7 priority support from our Customer Happiness Team.