Are emails admissible in court?

My fiance just received an email from his ex admitting that she intends for alimony to cease after 5 years as they verbally agreed to. The separation agreement in place, however, does not give a deadline. Can this email be used as evidence in court if she doesn’t follow through on her word?

No, the email is an offer to settle an issue outside of court, and is not admissable to prove that she may accept a termination of support in 5 years.