Brevo

Brevo (formerly Sendinblue) lets real estate agents reach clients through email and SMS on a model that doesn't punish you for having a large contact list. The free tier supports agents starting out or on tight marketing budgets.

It combines campaign tools with automation workflows, so you can trigger follow-ups based on client actions or timeframes. For agents watching expenses, Brevo's pay-as-you-go structure beats fixed monthly subscriptions.