Thunderbird partnered with <a data-l10n-name="gandi-home-link">Gandi</a> to offer you a custom domain. This lets you use any address on that domain.
Thunderbird yeddukkel akked <a data-l10n-name="gandi-home-link">Gandi</a> i wakken ad ak·am-imudd talɣut tudmawant. Ayen ara ak·akem-yeǧǧen ad tesqedceḍ yal tansa deg talɣut-a.