Gandi's pricing is in line with what most other quality email hosting services charge. And it is a very good email service. I was also sad when they announced there were dropping the free email tier but after shopping around for an alternative service I'm forced to admit it's what the market charges for the kind of features they offer.

It's true though that the pricing doesn't work for everybody. For example if you have multiple domains but very low overall email volume it's not going to make sense to pay $60/year/mailbox. In that case a service like Migadu is probably better suite because they let multiple domains/mailboxes share the same storage/email limits for a much lower cost.

I also wish Gandi offered a lower cost tier but it's their decision what kind of email users they want to target.