Mailed to or mailed too

A common conundrum!

The correct phrase is "mailed to".

Here's why:

• "Mailed to" is a correct phrase that means to send something through the mail to a specific person or address.
• "Mailed too" is incorrect because "too" is an adverb that means "also" or "very", whereas in this context, you need the preposition "to".

For example:

• I mailed the package to my friend in California. (Correct)
• I mailed the package too my friend in California. (Incorrect - use "to" instead of "too")

So, to summarize: if you're talking about sending something through the mail, use "mailed to". If you're talking about something being excessive or extreme, use "too"!