--- title: "SendGrid alternative" description: "How Unitpost compares to SendGrid — pricing, free tier, API design, and where SendGrid is still the better choice. Plus a one-key migration path." url: https://www.unitpost.com/alternatives/sendgrid section: Alternatives updated: 2026-07-27 --- # SendGrid alternative ## Unitpost vs SendGrid > The Twilio-owned incumbent, processing billions of emails a month across transactional and marketing with deep enterprise tooling. **SendGrid free tier:** None — a 60-day trial at 100 emails/day, then a paid plan (their free tier was retired in 2025) **SendGrid pricing shape:** Monthly plans by volume, competitive at high throughput, with marketing contacts and add-ons like email validation billed separately. ## What SendGrid does well - Proven at a scale we have not operated at, with enterprise support to match - The broadest integration catalogue in the category - Sub-account management for multi-tenant platforms, which we do not offer - Advanced IP management and dedicated IP pools for high-volume senders ## Choose SendGrid if - You send hundreds of thousands of emails a month, where their volume pricing is genuinely cheaper - You need sub-accounts to isolate sending for your own customers - You need an enterprise contract, procurement paperwork, or a named support contact - You depend on one of their many first-party integrations ## Choose Unitpost if - You want a permanent free tier — theirs is gone, ours is 3,000 emails/month - You want a modern API and DX rather than a surface shaped by a decade of backwards compatibility - You want marketing included rather than priced by contact count on top - You are a small team who would spend more time fighting the console than sending email ## Feature comparison | Capability | Unitpost | SendGrid | | --- | --- | --- | | Free tier | 3,000 emails/month, 100/day, no credit card | None — 60-day trial at 100/day, then paid. The free plan was retired in 2025 | | Price at high volume | Volume-based, but we do not try to undercut incumbents at the top of the range | Volume discounts make them cheaper at high throughput | | Sub-accounts / multi-tenant sending | Not offered — one workspace per team | Sub-user management on Pro and above | | Scale track record | New platform, no comparable public scale record | Billions of messages per month | | API design | One modern versioned surface — Bearer keys, cursor pagination, consistent error envelope | Mature but complex, with v2/v3 legacy surface area to navigate | | from display name | Embedded in the from string: Acme | A separate from.name field | | Idempotency keys | Idempotency-Key on sends, 24-hour dedupe window | Not offered | | Complaint suppression handling | Complaint suppressions cannot be self-serve removed (Postmark model) — a 409 protects your reputation from yourself | Removable with a warning | | Integrations | A small, growing set | Extensive first-party catalogue | | Idempotency keys on send | Idempotency-Key on sends, 24-hour dedupe window | — | | Webhook secret rotation without dropped deliveries | svix-compatible HMAC-SHA256 with a 24-hour dual-signing rotation grace | Rotation replaces the secret immediately | | Hybrid template editing | Visual drag-and-drop and React/TSX code mode over one shared document — the same @unitpost/email library renders both | Varies | | One-key import from SendGrid | Migration Assistant moves contacts, segments, topics, templates, domains, suppressions, and webhooks in about 4 minutes with a read-only key | n/a | ## FAQ ### Does SendGrid still have a free tier? No. SendGrid retired its free plan in 2025. New accounts get a 60-day trial limited to 100 emails a day, after which sending requires a paid plan. That single change is why much of the indie and startup community moved to providers with permanent free tiers. Unitpost's free tier is 3,000 emails a month with no credit card. ### Is Unitpost cheaper than SendGrid? At low and mid volume, usually — and our free tier is permanent where theirs no longer exists. At high volume, no: SendGrid's volume discounts make them genuinely cheaper, and we don't claim otherwise. Our pricing argument is about total bill rather than per-email rate, because marketing, automations, and unlimited contacts are included rather than billed as add-ons. ### Can I migrate from SendGrid without downtime? Yes. The Migration Assistant takes a read-only SendGrid API key, previews everything that would carry over — contacts, segments, templates, domains, suppressions, webhooks — and writes nothing until you accept. SendGrid keeps sending the entire time, so you cut over when your Unitpost domain is verified. Expect to re-verify domains with new DKIM keys and to regenerate webhook signing secrets. ### What does SendGrid do that Unitpost does not? Sub-account management for multi-tenant platforms, dedicated IP pools with advanced IP management, email validation as an add-on, an enterprise support and procurement track, and a much larger integration catalogue. If any of those is a requirement, SendGrid is the better answer today. ## Related - [Postmark alternative](https://www.unitpost.com/alternatives/postmark): How Unitpost compares to Postmark — pricing, free tier, API design, and where Postmark is still the better choice. Plus a one-key migration path. - [Mailgun alternative](https://www.unitpost.com/alternatives/mailgun): How Unitpost compares to Mailgun — pricing, free tier, API design, and where Mailgun is still the better choice. Plus a one-key migration path. - [Brevo alternative](https://www.unitpost.com/alternatives/brevo): How Unitpost compares to Brevo — pricing, free tier, API design, and where Brevo is still the better choice. Plus a one-key migration path.