Hello there,

Thank you for your review, we are very sorry to hear you feel this way.

You will still be able to continue using Mailbird PayOnce with all existing features. However, this offer doesn't include the cross-platform experience, which will be available only in Mailbird Next, and does not apply to the Appsumo offer. For the upgrade, we will be running lifetime upgrade offers on our website soon. We hope this helps and if you would have any further questions, please let us know!

Thanks again,
Nicole