An appropriate ending should have a closing statement that wraps up the letter's contents in a positive manner and follows with a complimentary closing appropriate for the person's relationship with the recipient, the occasion and what type of letter it is, notes Emily Post. For example, a business letter to someone may end with a more formal closure like "sincerely yours," "regards," "truly" or "best regards." A less formal letter might use a closing like "have fun," "adios," "peace out," "take care" or "bye for now."
When ending the letter, consider how formal or informal the relationship with the receiver is to determine an appropriate closing statement. For example, a letter to an old friend who might not be too close might have a closing like "as always," suggests Emily Post.