This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1. It should have a return address. 
2. It should have the date of when the letter was written. 
3. It should address the person you're writing to properly. 
4. It should contain a greeting, then the purpose of writing the letter. 
5. You should provide your contact details.