Email API service including Postmark SendGrid Resend Mailgun Mailtrap
This list compares 13 Resend alternatives: SendGrid (Turn emails into revenue with a fully integrated email platform.), Maileroo (Send transactional and marketing emails with ease using a platform designed for high deliverability.) and Sender (Grow your business, not your expenses. Turn curious visitors into devoted fans and drive more sales – no cost to get…). Other options compared here are Brevo, Unosend and useSend. Shortlist by the workflow you need covered first, then compare seat and usage limits, integrations and migration effort.
13 alternatives available · Last updated December 12, 2025
Updated: 10 months ago
| Tool | Pricing | Features | User Reviews |
|---|---|---|---|
• Free: 100 emails/day • Essentials: $ from 50k emails/mo • Pro: $ from 300k emails/mo • Premier: custom for high volume | • 99% deliverability rate • Email API and SMTP for developers • Tools for engaging campaigns • Analytics and suppression management • Domain authentication and security | • 4.2/5 on Capterra (1000+ reviews) • 4.0/5 on G2 (300+ reviews) • Users praise deliverability and ease • Some complain about support delays • Mixed on pricing changes | |
• Free: 3,000 emails/mo • Starter: $8/mo for 10k emails • Growth: $12/mo for 20k emails • Scale: Custom for 100k+ emails/mo • Dedicated IP free for 250k+ | • SMTP Relay and HTTP API for developers • Email marketing with segmentation and templates • High deliverability and 99.95% uptime • GDPR compliant servers in Europe • Analytics, logging, and inbound routing | • 4.5/5 on G2 (reviews available) • 5.0/5 on Capterra (5 reviews) • Users praise reliability and support • Easy setup and fair pricing • Some note need for UI improvements | |
• Free: 2,500 subscribers, 15k emails/mo • Standard: $10/mo for 12k emails/mo • Professional: $20/mo for 24k emails/mo • Enterprise: custom pricing | • Intuitive drag-and-drop email builder • Unlimited automation and segmentation • 1600+ free responsive templates • A/B testing for optimization • High deliverability with IP monitoring • Integrations with WordPress, Zapier | • 4.7/5 on G2 (212 reviews) • 4.7/5 on Capterra (100+ reviews) • Users praise ease of use and support • High marks for deliverability • Some note limits on free plan features | |
• Free: 5,000 emails/mo • Starter: $9/mo for 5,000 emails • Standard: $25/mo with automation • Professional: $65/mo advanced AI • Enterprise: custom pricing | • Multichannel: email, SMS, WhatsApp • Drag-and-drop editor, templates • Automation, segmentation, web tracking • AI tools for content, chatbots, optimization • CRM integration, 150+ apps | • 4.6/5 on Capterra (3,300+ reviews) • 4.5/5 on G2 (2,400+ reviews) • Users praise intuitive interface, support • Some note glitches, account issues • Affordable for small businesses | |
• Free: $0/mo for 5k emails/mo • Pro: $20/mo for 50k emails/mo • Scale: $100/mo for 200k emails/mo • Enterprise: custom pricing | • Lightning fast delivery in milliseconds • High deliverability with IP warming • Simple REST API and SDKs for devs • Real-time analytics and webhooks • Custom domains and integrations | • Limited reviews as new service • Positive testimonials on website • 5/5 from early users on ease • Praise for pricing and support • High marks for developer experience | |
• Free: 3000 emails/mo, 100/day • 1 contact book, 1 domain, 1 team member • Paid: $10/mo minimum with credits • Transactional: $0.0004 per email • Marketing: $0.001 per email, unlimited features | • Real-time analytics for deliveries, opens, clicks • WYSIWYG editor for marketing campaigns • Contact management with import/export • Suppression list for bounces/complaints • SMTP relay and typed SDKs for devs | • Positive testimonials on useSend.com • GitHub: 3,300+ stars, strong community • Users praise ease of setup and support • Early adoption, no G2/Capterra ratings yet • Occasional outage reports noted | |
• Default: 5,000 emails/mo, basic support • Pro: 50,000 emails/mo, 50 domains • Growth: 100,000 emails/mo, 200 domains • Scale: 200,000 emails/mo, 500 domains • Add-ons: Domains $3.50/mo, emails $16/50k/mo | • Programmable API for sending, receiving, replying, threading • Custom domains with unlimited mailboxes via MX setup • Webhook routing for specific or catch-all addresses • Automatic threading and fast delivery under 100ms • Spam detection and TypeScript SDK integration | • 5.0/5 on Product Hunt (1 review) • 9/10 overall from Microlaunch review • Users praise easy setup and developer focus • Trusted by Agentuity, Mandarin 3D, TeslaNav • Limited reviews as new product; no major complaints | |
• Free: 3,000 emails/mo • Pro: $20/mo for 50,000 emails/mo • Scale: $90/mo for 100,000 emails/mo • Enterprise: custom pricing • Dedicated IP: $30/mo add-on | • SDKs for easy developer integration • React Email for modern templates • Modular webhooks for real-time events • Test mode for safe experimentation • Deliverability tools and analytics | • 4.5/5 on G2 (4 reviews) • 3.5/5 on Trustpilot (6 reviews) • Users praise UI and deliverability • Some complain about bugs and speed • Developer-friendly with limited feedback | |
• No free plan • Hobby: $1/mo for transactional emails • Starter: $5/mo for marketing + transactional • Additional: $0.0020 per email • Includes 1 domain, 5 templates, 7-day retention | • Clean API for sending and tracking emails • Real-time logs for delivery, opens, clicks, bounces • Deliverability insights and suppression lists • Markdown email builder for templates • Managed dedicated IPs and global infrastructure | • New service with limited reviews • No ratings on G2 or Capterra yet • Positive mentions for affordability on LinkedIn • Developers praise easy integration on dev.to • Good feedback on speed and reliability | |
• Free: 100 emails/day • Basic: $15/mo for 10k emails • Scale: $90/mo for 100k emails • Enterprise: custom pricing | • Reliable email sending API • Email optimization tools • Fast validation service • Email inspection for accessibility • Scalable for high volumes | • 4.1/5 on G2 (317 reviews) • 4.2/5 on Capterra (1000+ reviews) • Users praise reliability for devs • Some note technical learning curve • Good for transactional emails | |
• Free: 100 emails/mo • Basic: $15/mo for 10k emails • Platform: $18/mo for 10k emails • Add-ons: Dedicated IP $50/mo | • Fast SMTP and API delivery • Libraries for multiple languages • High deliverability without IP • Separate streams for email types • Excellent customer support | • 4.6/5 on Capterra (50+ reviews) • 9.0/10 on TrustRadius (few reviews) • Users praise quick support • High marks for reliability • Few complaints, easy integration | |
• Sending Free: 4k emails/mo • Basic: $15/mo for 10k emails • Business: $85/mo for 100k emails • Testing Free: 50 tests/mo • Enterprise: $750+/mo custom | • Email sandbox for testing • RESTful API and SMTP relay • Analytics dashboards for metrics • Email templates builder • Webhooks and spam analysis | • 4.8/5 on G2 (100+ reviews) • 4.8/5 on Capterra (200+ reviews) • Users praise fast delivery • Good for testing and analytics • Some note tier limitations | |
• Free: 500 emails/mo • Hobby: $7/mo for 5k emails • Starter: $25/mo for 50k emails • Professional: $25/mo scalable • Enterprise: custom pricing | • High deliverability API/SMTP • Easy integration libraries • Extensive API documentation • 24/7 support and uptime • Integrations and verification | • 4.5/5 on G2 (45 reviews) • 4.0/5 on Capterra (20+ reviews) • Users praise quick setup • Good support responses • Some complain about usability |
SendGrid, Maileroo, Sender are the first tools to compare in this category. Review each product by core workflow fit, pricing, integrations, reliability, and migration effort before choosing.
SendGrid, Maileroo, Sender and Brevo are compared on this page. SendGrid (Turn emails into revenue with a fully integrated email platform.); Maileroo (Send transactional and marketing emails with ease using a platform designed for high…).
SendGrid (Turn emails into revenue with a fully integrated email platform.); Maileroo (Send transactional and marketing emails with ease using a platform designed for high deliverability.); Sender (Grow your business, not your expenses. Turn curious visitors into devoted fans and drive more sales – no cost…). Each covers a different slice of the workflow, so compare them on the job you need done rather than on raw feature counts.
Some of the tools here, including SendGrid, Maileroo and Sender, offer free plans or trials. Free limits usually depend on seats, usage volume and advanced features, so confirm current limits on each vendor's pricing page.
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