When we are wishing others, we intend to do it heartily. I have found the below Sanskrit blessing to be very soulful!

Greetings:

1.      Namaskaram – I bow to you! / I pay my respects to you!

2.      Namaste – I bow/honor to the divine in you!

For the group or individual:

1.      Lokah samastah sukhino bhavantu - May everyone, in the whole world, be

happy!

2.      Kalyanamastu or Bhavtu sabba mangalam or Sowbaghyamprapthirasthu – Be

happy and prosperous!

3.      Ishta Kamyardhi sidhi rastu or sahala Kamyardhi sidhi rastu – to be successful

in a task/exam/venture/job/interview etc.,

4.      Ashta ishwarya Prapti rastu - May you obtain all 8 types of wealth

5.      Laxmi kataksha prapthirasthu – May you obtain the blessing of Laxmi (to gain

wealth)

6.      Sarva kale sukhino bhavanthu – Be happy all the time!

7.      Eshwara karuna prapthirasthu – May all your suffering end by God’s grace!

For Kids:

1.      Sarva Siksha Prapti Rastu – May you gain complete knowledge and learning!

2.      Sukino Bhavanthu – May you/all be Happy!

For men/Women:

1.      Sadaiva Sukhi Bhava – May you always be happy!

2.      Dirghayu Bhava / Ayushman Bhava – May you live long!

3.      Chiranjeevi Bhava – May you be immortal (long-lived!

4.      Yashasvi Bhava – May you be glorious and successful!

5.      Shubham Bhavatu – May there be auspiciousness!

6.      Sarvam Shubham As tu– May everything be auspicious!

7.      Abhishtasiddhirastu – May all your wishes be fulfilled!

8.     If it is fine culturally, to bless someone to get married, then use-

Kalyana Prasptirasthu or sheegramey vivaha prapthirasthu – May you get

married soon!

9.      If it is fine culturally, to bless someone to get pregnant or to bless if pregnant-

then use -

Puthra Labam prapthirasthu or vamsa vridhaya prapthirasthu – May you beget

a heir! or May your lineage prosper!

Occasions:

1.      Janmadinam Shubhamastu - Wishing you a blessed birthday!

2.      Vivaahika Jeevanam Shubhamayam Bhavatu – May your married life be full of

happiness and auspiciousness!

3.    Sheeghram Swasthatam Praptum Shubhakamana- Wishing you a speedy

recovery!

4.      Swastha Bhavatu /Arogyam prapthirasthu  – May you be healthy!

Divine blessings:

1.      Bhagavan Apko Ashirvad Dein – May God bless you!

2.    Bhagavan Aapke Upar Apna Ashirvad Banaye Rakhein – May God keep

bestowing blessings upon you!

3.      Ishvara Tumhein Khush Rakhe – May God keep you happy!

4.      Bhadram te – God bless you!

References:

1.     https://brahminsnet.com/forums/forum/iyer-iyengar-rituals/1991-

2.     Note:

I have also used popular search engines to fetch some of the above details.

Hari Om!