2007, Mridula Sharma, Let Us Learn Internet, New Delhi: Ocean Books, →ISBN, page 138:
These are all E-mail addresses. Note the presence of @ (at the rate of) symbol.
2010 December 30, Visitors Insurance, “VISITORS MEDICAL INSURANCE (for Indians Nationals Visiting the United States)”, in soc.culture.indian[1] (Usenet):
Please write to visitusa2011gmail.com for details visitusa2011 at the rate of gmail dot com
2018, R.S. Salaria, Computer Concepts and Programming in C, New Delhi: Khanna Publishing House, →ISBN, page 161:
@ at the rate of sign
2022, Rajiv Sodhi, Poonam Sodhi, Artificial Intelligence CBSE Class 9, New Delhi: VK Global Publications, →ISBN, page 232:
An email has two parts: (i) Username and (ii) Host Name Both the parts are separated by @(at the rate of) symbol.