Check SingleEmail limit in Salesforce

Single Email Limit is subjected to emails sent via API or Apex. There’s no limit on sending single emails to contacts, leads, person accounts, and users in your org directly from account, contact, lead, opportunity, case, campaign, or custom object pages. Blog Post: https://www.infallibletechie.com/2022/07/how-to-check-singleemail-limit-in.html