for a long time ?(grammar mistakes)

[bosun]

If you find any grammatcial mistakes, please correct them for me. Thans in advance.

1.Let me assure you that we will never again get behind schedule in shipping.

2.I guarantee that the work will be done exactly according to the specifications that the development team created.

3.I don’t mind working for a long time.

4.Did you receive my e-mail of June 3. ?
As You know, The ongoing project is delayed
Since it requires a very urgent response, please do not hesitate in making your response

[Mister Micawber]

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If you find any grammatical mistakes, please correct them for me. Thanks in advance.

1.Let me assure you that we will never again get behind schedule in shipping.

2.I guarantee that the work will be done exactly according to the specifications that the development team created.

3.I don’t mind working for a long time.

4.Did you receive my e-mail of June 3rd?

As you know, The ongoing project has been delayed. Since it requires a very urgent response, please do not hesitate in responding.
.