this is to confirm receipt of your email vs this is to confirmed receipt of your email

Some examples from the web:

• This is to confirm our conversation of last Thursday.
• And this is to confirm there'll be no upstairs dinner tonight.
• All right, this is to confirm the people in my first group.
• [Woman] This is to confirm that you have been rescued by Angel... C.E.O. And president of Wolfram and Hart.
• This is to confirm that other methods used, in particular light-based treatment or naturally staggered births, are not affected by this restriction.
• Member States may request the importing third country to confirm receipt of the dispatched shipment of firearms, their parts and essential components or ammunition.
• Member States shall request the importing third country to confirm receipt of the dispatched shipment of firearms, their parts and essential components or ammunition.
• This is to confirm authorised to perform high risk commercial specialised operation(s) in accordance with this authorisation, operator's Standard Operating Procedures, Annex IV to Regulation (EC) No 216/2008 and its Implementing Rules.
• Member States shall, in case of suspicion, request the importing third country to confirm receipt of the dispatched shipment of firearms, their parts and essential components or ammunition.
• Empty your DNA to confirm receipt.
• request the importing third country to confirm receipt of the dispatched shipment of firearms, their parts and essential components or ammunition.
• I can only confirm receipt of the container, not its contents.
• The competent authorities shall immediately confirm receipt of the particulars referred to in the preceding subparagraph.
• The Commission shall confirm receipt of the notification by electronic means.
• One of their basic functions is to store customer signatures which confirm receipt of tracked items.
• This discussion is to confirm our present situation.
• The Central System shall confirm receipt of the transmitted data as soon as possible.
• The competent bodies at the airport(s) and air carrier shall confirm receipt of the notification.
• Mauritania will immediately confirm receipt of the notification by e-mail or fax
• The host Member State shall confirm receipt of that notification and without delay take the necessary measures to avert the danger and take charge of the operation.

Some examples from the web:

• My constituent tells me that he sent the documents again and that the Ministerio de Fomento confirmed receipt of them.
• The decision to grant subsidy will be issued once the EU has confirmed receipt of this notification.
• A readmission application must be replied to within a maximum of 25 calendar days from the date of confirmed receipt of the readmission application.
• The Commission confirmed receipt of the request with letters dated 24 February 2011 and 14 March 2011 and set the deadline for her reaction to 5 September 2011 in accordance with Article 114(6) TFEU.
• The Commission confirmed receipt of the request with letters dated 24 February and 14 March 2011 and set the deadline for her reaction to 5 September 2011 in accordance with Article 114(6) TFEU.
• My daughter Clare forwarded me your email.
• Reagan, I got your email.
• We tapped your phone, hacked your email.
• You keep changing your email password.
• Your email client is not supported.
• Let us go through your email list.
• Okay, just give me your email.
• I'm okay. I got your emails.
• I was so bummed to get your email about Rafa.
• Now, if you could just check your email...
• Please send her a message with your email.
• Fine, give me your email address.
• I was really excited to get your email.
• "I was waiting for your email".
• Are these your emails with danny?