Confirm who is asking
Check the request comes from an account admin before you send anything. Data in the wrong hands is worse than a slow reply.
Agree what and in which format
Ask what they need: tickets, contacts, attachments or everything. Offer a standard format such as CSV so you are not building something new each time.
Say when they will have it
Give a date, not a vague promise. If your process takes a few days, say so up front.
Deliver it safely
Send a time-limited download link to the admin address rather than attaching files to email.
Log the request
Tag the ticket and note what was sent and when, so the next request is quicker and you have a record.