While punctuation doesn’t hold the same weight in informal texting as it does in formal writing, it can still add subtle nuances and hints to your messages. Here are 11 ways punctuation can subtly alter the meaning of your texts:

1. Period (.): The classic full stop can sometimes convey abruptness, annoyance, or finality. Think twice before ending a sentence with a period if you don’t want to come across as curt.
2. Ellipsis (…): These trailing dots suggest hesitation, thoughtfulness, or even sarcasm depending on the context. “Okay…” could imply passive aggression, while “Sounds good…” might indicate uncertainty.
3. Exclamation Mark (!): An exclamation point adds emphasis and excitement, but overuse can make you seem overly dramatic or enthusiastic. Maybe save it for special occasions!
4. Question Mark (?): Beyond asking a question, a single question mark can express confusion, disbelief, or even mild annoyance. “Really?” can come across as skeptical, while “You did?!” might convey surprise.
5. Comma (,): Commas can create pauses, add emphasis, or separate lists. Using too many commas, however, can make your message feel cluttered and difficult to read.
6. Semicolon (; ): This less common punctuation mark can be used to connect closely related clauses or create a dramatic pause. However, it’s best used sparingly in informal texting, as overuse can sound pretentious.
7. Emojis and Smileys (:) 😀 😉: These little icons are a great way to add personality and emotion to your texts. A simple smiley can soften a potentially harsh message, while a wink 😉 can add a playful undertone.
8. All Caps: TYPING IN ALL CAPS is often seen as shouting online and can come across as aggressive or demanding. Use it sparingly for emphasis, like “OMG THAT’S AMAZING!”
9. Spacing: Deliberate spacing, like “I miss you”, can add dramatic emphasis or create a sense of mystery. However, excessive spacing can be confusing and hard to read.
10. Line Breaks: Breaking up your text with multiple lines can make it easier to read on small screens, but be mindful of not overdoing it as it can fragment your message.
11. Typos and Autocorrect Fails: We’ve all been there. While typos happen, sometimes they can unintentionally change the meaning of your message. Double-check before hitting send to avoid hilarious (or embarrassing) mishaps!

https://smartupworld.com/11-secret-meanings-behind-punctuation-in-text-messages/