Pardon me, though a stranger to you personally, for taking liberty to address you these few lines.
As I have not heard of you for long, I feel anxious.
I must apologize for not having written to you previously.
Please pardon my long in writing to you.
Pardon me for neglect when you honored me with a visit the other day.
Having mislaid your address, I have not been able to reply sooner.
Your letter of the 4th this month was duly received.
I have the pleasure to tell you that..
I have just received your kind letter.
Your kind letter of Saturday arrived this morning.
Please notify me soon.
Looking forward to a prompt reply.
Please do not fail to write to me.
I shall feel obliged by a reply at your earliest convenience.
I look for your answer in a few days.
Let me hear if you receive the parcel safely.
As the season grows colder, I hope you will take good care of yourself.
With kind regards to your family.
Please give my compliments to your family.
Pray give my best remembrances to Mr. Brown.
My parents ask also to add their best thanks to mine.
Adieu till then.
Thanking you for the past favour.
I think you for the trouble you have taken.
Hoping you will have a pleasant trip.
Wishing you a pleasant journey.
The help you sent is sincerely valued.
The bearer of this letter, Mr. Chen, professor of ..., (an esteemed friend of mine), is desirous of being introduced to your acquaintance.
I am very grateful for your kindness in permitting me to...
I respectfully acknowledge your note and will wait upon you as proposed.
Should an interview be desired, I shall be happy to call at any hour you may appoint.
I have some important business matter to communicate to you.
Anything further will be discussed when we meet.
I regret that a prior engagement will prevent me from a tending.
I think you for your kind entertainment last evening.
I shall have great pleasure in accepting your invitation.
Accept my thanks for our handsome present.
I wish you a happy New Year.
Pray accept my best and sincerest wishes for the New Year.
Presenting the compliments of the season.
With every good wish.
Pray allow me to congratulate your most heartily on your success in your examination.
I am glad to hear that you were appointed..., on which I congratulate you most heartily.
I congratulate you upon your success.
I wish you still further success.