How schedule sending 50 emails each day (make email queue)?

i have 340 emails
how schedule sending 50 emails each day (make email queue)?and how set interval between sending daily emails?
8(hours daily) / 50 (emails) = 0.16 hours ==> every 9.6 minutes send an email

Working with team members in different time zones? Going on vacation but still want to send an update to someone when you’re away? With Gmail, you can compose your email and schedule it to send at a specific date and time. You can have up to 100 scheduled emails.

Note: Confidential mode messages can’t be scheduled to send later.

Schedule email to send later

1. Open Gmail.
2. Click Compose ![""|18x18](https://storage.googleapis.com/support-kms-prod/d1C6vAbDiohX3TUNOadWi7e60XI0WyngDCNx “”"") and enter a recipient and text.You might see Compose ![""](https://storage.googleapis.com/support-kms-prod/cyIHMLaPQa88L5W4ZCjFNGWWAyRLIZZhdysW “”"") instead.
3. At the bottom, next to Send , click the Down arrow Drop down arrowand then Schedule send .
4. Select or specify a date and time to send the message.