SendGrid alternative
Sendpository vs SendGrid
A SendGrid alternative for developers who want to send and receive email through one API - with SendGrid's own published pricing worked out at the volumes people actually send, and the other SendGrid competitors worth a look.
In short
SendGrid is a long-established, enterprise-scale email platform; Sendpository is a focused email API for developers. Choose Sendpository for a smaller API surface and built-in receiving; choose SendGrid if you need its marketing suite and enterprise contracts. Sendpository has a permanent free plan (6,000 emails a month); SendGrid does not.Side by side
| Sendpository | SendGrid | |
|---|---|---|
| Free tier | 6,000 emails a month (up to 200 a day), free forever | The permanent free plan was retired in 2025 in favour of a 60-day trial (100 emails a day). Essentials starts at $19.95 a month for up to 100,000 emails. |
| Receiving email | Inbound addresses on your own domain, delivered to your inbox, API and an email.received webhook - with an SPF, DKIM and DMARC verdict on every message. | Inbound Parse posts incoming mail to your webhook. |
| Domain signing | A 2048-bit DKIM key generated per domain, signed as your own domain so it passes strict DMARC alignment. | Domain authentication is done with CNAME records pointing back at SendGrid, so they hold the key and rotate it rather than you publishing it yourself. Link branding uses the same mechanism. |
| Developer tooling | REST API, a typed Node.js/TypeScript SDK with no dependencies, idempotency keys, scheduled sends, signed webhooks and searchable delivery logs. | REST API v3 alongside an SMTP relay, SDKs in seven languages, Dynamic Templates with Handlebars, and an Event Webhook whose payloads are signed with ECDSA. The Email Activity feed is searchable, with retention set by plan. |
| Scope | One API for sending and receiving, with logs and webhooks. Nothing to configure you don't use. | A broad platform: transactional API, SMTP relay, marketing campaigns and contact management. |
SendGrid details are from their published pages, checked 2026-09-23. Sendpository’s free tier is read from our live plans.
What SendGrid costs at real volumes
A headline price per month means little until you put your own volume against it. These are SendGrid’s own published figures, worked through at three common monthly volumes. Sendpository’s side is on the pricing page, read from the same live plans this page reads.
| Emails a month | SendGrid, as published |
|---|---|
| 10,000 | $19.95 a month - Essentials starts there and covers up to 100,000. |
| 50,000 | $19.95 a month, within the same published tier. |
| 100,000 | $19.95 a month, the stated ceiling of Essentials; above it, Pro plans apply. |
Worked out from SendGrid’s published pricing on 2026-09-23 (source, source). Prices change; check their site before you decide.
Deliverability
SendGrid runs one of the largest sending footprints in the industry and sells dedicated IPs, deliverability consulting and enterprise support alongside it. Sendpository covers the same fundamentals - 2048-bit DKIM aligned to your domain, automatic suppression after a hard bounce or complaint, and searchable logs for every attempt - without a separate deliverability product to buy.
Choose SendGrid if
Large organisations that want marketing campaigns, contact management and enterprise support contracts from the same vendor as their transactional email.
Choose Sendpository if
Developers who want one small API to learn, and receiving email on the same account without a separate setup. Sendpository has a permanent free plan (6,000 emails a month); SendGrid does not.
Switching from SendGrid
Verify your sending domain, create an API key, and replace your SendGrid send call with a POST to /v1/emails carrying from, to, subject and html. Update your webhook handler for Sendpository’s event names. The quickstart takes about ten minutes, and the SendGrid migration guide maps every field, header, webhook event and error.
curl https://api.sendpository.com/v1/emails \
-H "Authorization: Bearer $SENDPOSITORY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"from": "you@yourdomain.com",
"to": "customer@example.com",
"subject": "Your receipt",
"html": "<p>Thanks for your order.</p>"
}'Other SendGrid alternatives worth shortlisting
Sendpository is not the only answer, and a comparison that pretends otherwise is an advertisement. If the fit above is wrong, these are the providers most people weigh against SendGrid - each one better than us at something.
| Provider | Why it makes the shortlist |
|---|---|
| Postmark | A transactional-only focus, if the marketing suite is not what you came for. |
| Resend | A smaller, developer-first API built alongside React Email. |
| Amazon SES | Raw sending at the lowest price per email, with the plumbing left to you. |
All five, with free tiers side by side, are on the email API alternatives page, and Resend vs SendGrid vs Postmark sends the same email through each.
Questions
Does SendGrid still have a free plan?
SendGrid replaced its permanent free plan with a 60-day trial in 2025. Sendpository's current plans, including any free plan, are on its pricing page.
How do I migrate from SendGrid to Sendpository?
Verify your sending domain in Sendpository, create an API key, and replace the SendGrid send call with a POST to /v1/emails with from, to, subject and html. Point your event webhook at your handler for Sendpository's webhook events.
Does Sendpository support SMTP?
Sendpository is an HTTPS API. If your framework only speaks SMTP, most have an HTTP mail driver or a small adapter; the guides show examples for common frameworks.
Other comparisons
Sendpository vs Resend
Apps that need to send and receive email through one API, and teams that want strict-DMARC-ready DKIM by default.
Sendpository vs Postmark
Apps that also need to receive email with sender verdicts, through the same API they send with.
Sendpository vs Mailgun
Developers who want the sending and receiving they need without a large console to learn.
Sendpository vs Amazon SES
Teams that want delivery logs, signed webhooks, suppression lists, receiving and a dashboard without wiring AWS services together.
Send your first email in minutes
6,000 emails a month (up to 200 a day), free forever. No card needed.