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Dear Mr./Mrs.
Estimado/a señor/a
Many thanks for
Muchas gracias por
With reference to
Con referencia a
With respect to
Con respeto a
I appreciate it
Lo agradezco
As you already know
Como usted ya sabe
I have received
He recibido
I understand that
Entiendo que
I would like to inform you that
Quisiera informarle que
It is important that you know that
Es importante que usted sepa que
As you may imagine
Como se puede imaginar
To answer your question...
Para responder su pregunta...
If it were possible
Si fuera posible
Do not hesitate to
No dude en
Sincerely
Atentamente
Yours cordially
Le saluda cordialmente
Respectfully
Respetuosamente
Waiting for your prompt response
Esperando su pronta respuesta
To whom it may concern
A quien corresponda
I'm writing on behalf of...
Escribo de parte de
I await your reply
Espero su respuesta
Could you give me some more information about_____?
¿Podría darme más información sobre_____?
I have received your email and thank you for sending it.
He recibido su correo electrónico y le agradezco por mandarlo
I am writing you in reference to...
Le escribo a Ud. en referencia a...
In response to...
En respuesta a...
I am very thankful for this opportunity.
Estoy muy agradecido por la oportunidad.
I am very interested in... and would like to know...
Estoy interesado en... y quisiera saber...
I am excited to participate in the program.
Estoy entusiasmado de participar en el programa
I thank you in advance...
Le agradezco de antemano...
Yours sincerely,
Le saluda atentamente,
Without further ado, yours sincerely,
Sin otro particular, le saluda atentamente,
Respectfully yours,
Respetuosamente,
Cordial goodbye,
Se despide cordialmente,