
SendGrid offers tiered email API plans with free plan including 100 emails/day. Paid plans include Essentials ($19.95/month), Pro ($89.95/month), and Enterprise with custom pricing. The service provides SMTP and API access, email validation, dedicated IPs (additional $30/month), and overage charges up to $0.00133/email. Additional Email API costs are separate from Marketing Campaigns billing.
Email API for reliable transactional email delivery
G2 Rating
Starting Price
Funding
Boost Email Deliverability with Affordable Google Workspace & Automated Setup
Starting Price
Zapmail is a cold email infrastructure platform focused on streamlining deployment and management of pre-warmed Google Workspace and Microsoft mailboxes for outbound campaigns.
AI-powered email warm-up platform for improving deliverability
Starting Price
Warmbox.ai is an AI-powered SaaS platform that automates the email warm-up process by sending realistic, human-like interactions from your inbox. It helps ensure cold emails reach recipients' main inboxes rather than spam folders.
Strapping a jet engine to your cold email tool
Mailscale is a cold email infrastructure tool claiming 95-100% deliverability for professional inboxes with account setup in under 60 seconds.