When designing the onboarding email sequence for a SaaS product during the free trial period

Prioritize essential features and advantages, analyze user interaction, and utilize A/B testing to identify the best amount of onboarding emails for a SaaS product during the free trial. .

Never send emails to bounced email addresses. Keep your email list clean and up-to-date by regularly verifying it with an email checker or email verification tool. Pay attention to feedback from your email service provider and take action to improve your email marketing strategy. Useful video Article https://unspam.email/articles/em...

I'd say based on your mapped out customer journey and desired action out, and email only to prompt those critical journey points. I personally liked Calendly's onboarding email sequence. Can try to reverse engineer theirs.