| Subject | English | Kazakh |
| comp., MS | active mailbox | белсенді пошта жәшігі (A mailbox that has been accessed at least once in the last 30 days) |
| comp., MS | active mailbox migration | белсенді пошта жәшігін тасымалдау (The stage during the e-mail migration when the migration service is actively provisioning new cloud-based mailboxes) |