New Job: The best time to negotiate is after an offer has been extended but before you've accepted. This is when you have the most leverage.All DES contracted child care providers must complete a child care provider registration agreement and keep all information on file with DES up-to-date. Accepting the offer. Show gratitude for the offer in a follow-up email after the discussion. Salary Negotiation Email After The Job Offer. . 1. Review Committee and the successful negotiation of a contract. When should you send a salary negotiation email? The art of expressing salary expectations. Because receiving an offer is when the salary negotiation begins.