Letter Expressions – Informal & Formal

Just wanted to let you know…

Hope to hear from you soon

Dear Sir or Madam

Yours sincerely / Yours faithfully.

I look forward to hearing from you

You can call me if you need anything

I am writing to inform you…

Hi Robert,

Love,

Cheers,

Please do not hesitate to contact me

Yours Truly, Best regards, kind regards