If I can't use Thunderbird with my free protonmail account, I can't use your product. Surely you have an alternative business model to generate revenue for your company without placing the burden of paying to use a free product with a free product on the end user.
If I can't use Thunderbird with my free protonmail account, I can't use your product. Surely you have an alternative business model to generate revenue for your company without placing the burden of paying to use a free product with a free product on the end user.