Apology email after a screw-up

Help me draft an apology email about {{what happened}}.

Context:
- What broke: {{specific incident — outage, data issue, missed commitment, etc.}}
- Who's affected: {{which customers / how many}}
- Severity: {{minor inconvenience / lost work / financial impact}}
- Root cause (if known): {{honest answer}}
- What we're doing about it: {{actual remediation, not "we take this seriously"}}

Output an email that:
1. **Names what happened** in line 1, plainly. No "we experienced an issue."
2. **Owns it** — no passive voice ("an error occurred"). Use "we."
3. **Explains the impact** specifically — what they lost / had to redo / paid for
4. **What we're doing** to fix it now AND prevent recurrence (concrete, not "we're committed")
5. **Compensation if any** — only if real, don't promise vaguely
6. **A real contact** for follow-up, not "support@"

Tone: serious but not groveling. Don't promise "this will never happen again" — it might.

Skip:
- "We sincerely apologize for any inconvenience"
- "Your business is important to us"
- Anything that sounds like the customer-service handbook