Can I buy multiple Deutschlandtickets through one account?

No, this is not possible. Due to the personalization of the Deutschlandticket, only one active subscription can be purchased and managed per account (and per email address).

Each ticket must be linked to a unique account and a unique email address.

If you need a second ticket for another person (e.g. a friend or family member), you must make a separate purchase for that person using their personal details and their own email address.