Sending Emails to Large Lists of Users > 1000

Has anyone had success reliably sending emails to thousands of users?

I am familiar with recursive workflows, but when sending to a large list, even with a 2 sec interval between workflows, it could take hours to complete.

Caveat, users of application will have various lists that they can send to. If using a email marketing service via API, will need some type of way to send over lists prior to email being sent out.

Since email sending doesn’t require much capacity in my experience I’ve been able to schedule out hundreds of emails to users of my app within minutes

If you’re using an email api like Postmark, they also have batch sends where you can send to up to 500 people at once

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Which also supports large batch of users.

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