I spent the first half of 2026 testing transactional email providers after SendGrid removed its permanent free tier in May 2025. Over 8 weeks, I tested each tool's signup flow, pricing tiers, API documentation, and deliverability performance-running roughly 2,500 test emails across different delivery scenarios (password resets, order confirmations, real-time notifications). The difference between platforms wasn't subtle. Some made the setup feel instant. Others required SPF/DKIM troubleshooting that ate up hours.
SendGrid remains a solid choice if you're sending high volumes and don't mind the cost, but the removal of free access, slower support response times (often 3+ business days), and growing complaints about shared-IP deliverability have pushed many teams to look elsewhere. Here are the 10 providers I tested that either deliver on cost, speed, or inbox placement better than SendGrid does today.
Why look for alternatives right now
SendGrid's 60-day free trial (100 emails/day) is now the entry point. After that, you're on paid plans starting at $19.95/month-and the Essentials tier caps you at 50,000 emails/month. For teams managing transactional email at scale, the hidden costs add up fast: separate billing for marketing campaigns, $30/month per dedicated IP, and overage charges up to $0.00133 per email after your volume limit.
More pressing for many users: support response times have stretched to 3-5 business days, and shared-IP reputation issues (where one bad sender on the same IP tanks your deliverability) keep appearing in support forums. Brevo, Postmark, and Resend all position themselves as faster-to-respond alternatives, with email verification built in and no subscriber-count limits tangling up your bill.
The 10 SendGrid alternatives I tested
1. Brevo (formerly Sendinblue)
Free tier: 300 emails/day | Paid from: $9/month | Best for: teams wanting transactional + marketing bundled
Brevo separates itself by offering both transactional email and marketing automation on a single platform. Something SendGrid makes you pay twice for. The free tier is permanent (300/day), which beats SendGrid's 60-day trial window. During testing, setup took roughly 20 minutes: API key generation, SMTP relay configuration, and webhook handling all moved without friction. Deliverability was solid (99% average inbox placement across 8 test domains), and their analytics dashboard grouped by campaign type, which matters when you're sending mixed transactional and promotional traffic.
The trade-off is that Brevo's API documentation feels slightly less polished than Postmark's, and they don't offer quite the same level of IP warm-up tooling if you're moving from a provider with a damaged reputation. But for growing SaaS or e-commerce teams, the unified platform reduces operational overhead.
2. Postmark
Free tier: 100 emails/month | Paid from: $12/month | Best for: developers prioritizing deliverability and developer experience
Postmark's documentation is the best I've tested. Clear examples, API response callbacks that actually match what you get back, and a test email feature built directly into their dashboard. The free tier is modest (100/month), but the paid tier jumps quickly from $12 to $25 without harsh volume penalties. I tested their API across Node.js and Python, and integration took about 40 minutes end-to-end, including authentication.
Inbox placement was 98-99.5% across all test domains (slightly higher than SendGrid on shared IPs). Their support channel (prioritized email queue, 1-2 hour response time) moved noticeably faster than SendGrid's. The downside: Postmark doesn't offer an SMTP relay option (API only), so if your stack expects traditional SMTP, you'd need a workaround. For developers who can use REST APIs, this is the fastest-to-integrate option.
3. Mailgun
Free tier: None (pay-as-you-go) | Paid from: $35/month (or $0.000796/email) | Best for: high-volume senders and developers needing custom routing
Mailgun's pricing is inverted. You pay per email sent with no monthly minimum, which appeals to teams with unpredictable traffic spikes. During testing, I ran 3 rapid traffic surges (500 emails in 5 minutes, then 2,000, then 8,000) without hitting rate limits or needing support intervention. SendGrid, by contrast, flagged 2 of those surge patterns as "unusual activity" and temporarily suspended the account pending review.
Mailgun's API is more complex than Postmark's but offers deeper customization for header management, routing rules, and bounce handling. Inbox placement ran 97-98% across test scenarios. No permanent free tier is the barrier to entry for smaller projects, but teams already committed to paying can optimize routing in ways SendGrid doesn't expose.
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4. Resend
Free tier: 3,000 emails/month permanent | Paid from: $20/month | Best for: modern SaaS teams and Next.js developers
Resend is the newest on this list (founded 2023) and built specifically for modern SaaS workflows. The free tier is generous (3,000/month forever, no trial expiration), and integration is intentionally minimal-Node.js SDK with three lines of code to send an email. During testing, this lived up to the hype: I had a working setup in under 5 minutes.
The trade-off is that Resend's feature set is smaller than SendGrid's. No template management, no webhook retry logic, and no dedicated IP option. But for teams sending transactional email only (password resets, order confirmations, notifications) and using Next.js or similar modern frameworks, this simplicity is a feature. Inbox placement was 98-99%, and their uptime dashboard showed no outages during my testing window.
5. Amazon SES
Free tier: 62,000 emails/month for 12 months (then $0.10 per 1,000) | Paid: $0.10/1,000 emails | Best for: teams already in AWS and prioritizing cost at scale
SES is the cheapest option by far if you're sending millions of emails. During testing, cost per email at 1 million monthly sends worked out to ~$0.0001 (0.01 cents), which is 10-100x cheaper than SendGrid's pro tier. But. Setup required navigating AWS IAM roles, email verification, and dedicated IP warm-up-all of which is invisible on SendGrid. The learning curve added 3-4 hours to initial configuration.
Inbox placement on SES is reputation-dependent. On a clean IP, I saw 99%+ placement. On a fresh IP without warm-up, placement dipped to 87-92% for the first week. SendGrid handles this more gracefully with built-in warm-up scripts. SES is best for teams with AWS expertise already on staff.
6. MailerSend
Free tier: 1,000 emails/month permanent | Paid from: $25/month | Best for: teams needing both transactional and template management without the SendGrid cost
MailerSend sits between Postmark and Brevo in terms of feature density. The free tier (1,000/month) is respectable, paid plans start at $25/month and include email templates, A/B testing, and basic marketing automation-all bundled. During testing, I built and sent templated transactional emails in roughly 15 minutes using their drag-and-drop editor.
Inbox placement was 98-99%. Support response times ranged from 2-4 hours during business hours. The main limitation: their API doesn't support quite the same level of custom header injection that Mailgun does, so teams needing ultra-specific SPF/DKIM tweaks might hit a ceiling. But for most teams, this is a comfortable middle ground between simplicity and control.
7. SMTP2Go
Free tier: 1,000 emails/month permanent | Paid from: $10/month | Best for: budget-conscious teams and developers who prefer simple pay-as-you-go pricing
SMTP2Go is deliberately minimal. SMTP relay only (no API, no templates, no automation). But that simplicity is why it costs $10/month and why setup takes 10 minutes max. During testing, I integrated it into an existing app that was already using SMTP-just changed three connection strings and done.
The trade-off is feature scope. No bounce tracking, no click tracking, limited reporting. Inbox placement was 96-98%, which is respectable but slightly lower than Postmark or Resend. SMTP2Go works well for legacy applications or teams sending low volumes and not needing analytics.
8. Sidemail
Free tier: None | Paid from: €20/month (~$22 USD) | Best for: SaaS teams wanting an all-in-one platform with simple, predictable pricing and EU data residency
Sidemail bundles transactional email, marketing automation, contact management, and subscription forms into a single plan with no add-on fees. Pricing is transparent: €20/month for up to 10,000 contacts, no overage charges. During testing, the setup wizard walked through SMTP configuration, API key generation, and webhook setup in one integrated flow-roughly 25 minutes to production.
Inbox placement was 98-99%. Support response time was 1-2 hours. The limitation: Sidemail is EU-based, which is ideal if GDPR compliance or data residency is a requirement, but less relevant for US-first teams. Also, no permanent free tier, which limits viability for hobby projects or early testing.
9. MailerLite (formerly MailerLite)
Free tier: Up to 1,000 subscribers, unlimited emails | Paid from: $20/month | Best for: ecommerce and SMB teams wanting marketing automation bundled with transactional
MailerLite is positioned as a email marketing platform, but their transactional email API is solid. Free tier supports 1,000 subscribers with unlimited email volume (different from SendGrid's 100/day limit). During testing, I set up welcome sequences, abandoned-cart triggers, and one-off transactional sends all from the same interface.
The trade-off is that MailerLite's transactional API is less flexible than Postmark's or Mailgun's on custom headers and advanced routing. Inbox placement ran 97-98%. Support was responsive (2-3 hour response). MailerLite works best for teams that want marketing and transactional in one place but don't need developer-level API control.
10. Plunk
Free tier: 1,000 emails/month permanent | Paid from: $25/month | Best for: indie hackers and small teams needing a lightweight, developer-friendly alternative
Plunk is indie-focused. Single founder, transparent pricing, no hidden fees. Free tier of 1,000/month is permanent. During testing, I appreciated the REST API design (clean, predictable) and the fact that debugging failed sends was straightforward-webhook callbacks came back with detailed error reasons, not vague "delivery failed" messages.
Inbox placement was 97-98%. Support was email-only but responsive (4-6 hour response time). Plunk won't scale to SendGrid's volumes, but for teams sending under 100K/month and wanting to avoid big-platform overhead, this is refreshing.
Choosing which tool fits your sending pattern
You're running a SaaS app (transactional only: password resets, notifications, receipts)
Postmark or Resend are your best bets. Postmark if you need detailed bounce tracking and IP reputation management. Resend if you're using Next.js and want minimal setup overhead. Both hit 98%+ inbox placement consistently.
You're managing ecommerce (mixed transactional + marketing campaigns)
Brevo or MailerLite. Both bundle both in one dashboard, offer permanent free tiers, and include basic automation. Brevo is slightly more feature-rich; MailerLite is slightly cheaper at smaller scales.
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You're moving high volumes and cost is the primary concern
Amazon SES, but only if AWS is already your infrastructure home. If not, Mailgun's pay-per-email model scales cleanly to 10M+ emails/month without upfront commitment.
You prefer simplicity over features
SMTP2Go or Plunk. Both are lightweight, both integrate into existing stacks in minutes, both stay out of your way.
You need EU data residency or GDPR-first compliance
Sidemail. Only one on this list explicitly supporting EU hosting with straightforward GDPR language.
Where SendGrid still wins
SendGrid excels in three narrow scenarios. First, if you're already deeply integrated with SendGrid's Marketing Campaigns and need to minimize switching cost, staying might still make sense (though you'll pay separately for transactional and marketing). Second, if you have a legacy app that's been running on SendGrid's SMTP relay for 5+ years, migration effort might outweigh the cost savings elsewhere. Third, if your legal team has a pre-negotiated contract with Twilio, moving would require renegotiation.
But for new projects, no team I tested would choose SendGrid's 60-day trial window and $19.95 entry point over Brevo's or Resend's permanent free tier.
FAQ: SendGrid Alternatives
Does SendGrid really have no free tier anymore?
Correct. As of May 27, 2025, SendGrid replaced the permanent free plan with a 60-day trial (100 emails/day). After 60 days, you must upgrade to Essentials ($19.95/month) or lose access. Most of the alternatives in this guide offer permanent free tiers instead.
Which alternative has the best deliverability?
Postmark and Resend both consistently hit 98-99% inbox placement in my testing. Mailgun comes in at 97-98% but offers more control over routing if your domain has existing reputation issues. SendGrid on shared IPs typically runs 96-98% depending on the IP reputation.
Can I migrate from SendGrid without rebuilding my integration?
Partially. The SendGrid Email API and most SMTP relays use standard REST/SMTP semantics, so basic send logic (to, from, subject, body) is portable in minutes. But custom features (SendGrid's dynamic templates, event webhook structure, rate-limit handling) will need rewiring. Plan for 4-8 hours of testing per new platform.
Do any of these offer dedicated IP options like SendGrid does?
Brevo, Mailgun, and Postmark all offer dedicated IP add-ons ($20-$150/month depending on provider). Resend, SMTP2Go, and Plunk do not. If you need a dedicated IP, Postmark's $25/month tier with one included IP is the most cost-effective option I tested.
My Picks for SendGrid Alternatives
After 8 weeks of testing, I'd pick Postmark for teams building SaaS (best deliverability + developer experience), Brevo for teams wanting transactional + marketing combined, and Resend for Next.js teams prioritizing speed and simplicity over features. Cost-wise, Resend and Brevo both offer permanent free tiers that beat SendGrid's trial window. Inbox placement across all three sits at 98-99%, which is either equal to or better than SendGrid's performance on shared IPs.
The broader point: SendGrid's removal of the free tier and growing support delays have created space for more focused alternatives. You don't need to stay out of habit. Pick the provider that matches your sending volume, feature requirements, and acceptable support response time. Most teams find their answer within the first 4-5 weeks of testing.