We offer you our cordial congratulations and best wishes

My most sincere congratulations are yours

I hope in a few days to be able to offer my congratulations in person

Accept hearty congratulations

With most sincere congratulations

I write to offer my heartfelt congratulations

You will receive many hearty congratulations but none more sincere than mine

It must have been a great joy to you. I heartily congratulate you

I applaud you

For Letters of Introduction