BKO-E15 english writing

Formal: Dear Mr/Mrs/Ms Dupuis; Dear Mary

Informal: Hi/Hello Mary; Mary,...

Formal:
Thank you for your email of...
Further to your last email...
I apologise for not getting in contact with you before now

Informal:
Thanks for your email..
Re your email...
Sorry I haven't written for ages, but I've been really busy

Formal:
I am writing in connection with...
I am writing with regard to...
In reply to your email, here are...
Your name was given to me by...
We would like, to point out that...

Informal:
Just a short note about...
I'm writing about...
Here's the ... you wanted
I got your name from...
Please note that...

Formal:
I'm writing to let you know that...
We are able to confirm that...
I am delighted to tell you that..
We regret to inform you that...

Informal:
Just a note to say...
We can confirm that...
Good news!
Unfortunately...

Formal:
Please find attached my report.
I'm sending you... as a pdf file

Informal:
I've attached...
Here's the ... you wanted

Formal:
Could you give me some information about...
I would like to know...
I'm interested in receiving/finding out...
What are your usual charges for...

Informal:
Can you tell me a little more about...
I'd like to know...
Please send me...

Formal:
I'd be grateful if you could...
I wonder if you could...
Do you think I could have...
Thank you in advance for your help in this matter.

Informal:
Please could you...
Could you...
Can I have...
I'd appreciate your help on this

Formal:
I will...
I'll investigate the matter...
I will contact you again shortly...

Informal:
Please could you..
Could you...
Can I have..
I'd appreciate your help on this...