... community members are using for correspondence, transactional and marketing emails. Why did you choose those ESPs? Price, features, integrations? Business Correspondence: Google Workspace (Gmail), Microsoft 365 (Outlook), Zoho, etc Transactional: SendGrid, Mailgun, AWS SES, Postmark, etc Marketing: Klaviyo, CampaignMonitor, Mailchimp, Hubspot, Constant Contact, Omnisend, Brevo, Active