Three emails are not "best efforts". 4.5 months notice is not "best effort".
My opinion on best effort: I founded, ran, and sold a SaaS company used by some of the most well known companies in the world. Our "best effort" was a minimum of 12 months notice, with a six month grace period afterwards. Emails weekly. Phone calls at least once a month. Reach out to customer leadership if no response. Then scream test as others suggested.
My opinion on best effort: I founded, ran, and sold a SaaS company used by some of the most well known companies in the world. Our "best effort" was a minimum of 12 months notice, with a six month grace period afterwards. Emails weekly. Phone calls at least once a month. Reach out to customer leadership if no response. Then scream test as others suggested.