Write a hard email diplomaticallyPromptLow risk

I need to email {{recipient}} to {{goal}}.

Context: {{context}}
Tone: {{tone}}

Write the email:
- Clear first sentence that states the point.
- Brief reason, no over-explaining or excessive apology.
- Offer an alternative or next step if possible.
- Under 150 words.

Also give a softer and a firmer version.