Mailmeteor allows you to send personalized emails up to the limits imposed by Gmail:
Google Workspace accounts (formerly G Suite) can send up to 2000 emails per day
Gmail accounts (@gmail.com) can send up to 500 emails per day
Mailmeteor abides by these limits and allows you to send as many emails as you can using your own Gmail account. Your quota varies depending on the type of your Google account (G Suite or Gmail) and your plan. Read more about email quota.