In this context, the font becomes a surrogate for linguistic fluency. It allows the sender to perform Tamil identity without necessarily possessing the grammatical competence to construct the sentence from scratch. This performance is crucial for maintaining familial bonds. A birthday wish sent in the mother tongue carries an implication of belonging that English simply cannot replicate.
If the recipient sees boxes (□) instead of Tamil letters, they need to install a Tamil Unicode font on their device. Most modern phones show it automatically. birthday wishes in tamil font