Bird vs SendGrid

The SendGrid alternative.

SendGrid set the standard for the email API a decade ago, and it is still a solid, ubiquitous choice. Bird runs email on SparkPost, the platform it acquired in 2021, which carries about 40% of the world’s commercial email, with a modern API and SMS and voice on the same account. Here is where each one fits, including where SendGrid is the better pick. See the Bird Email API for the full surface.

Read the migration guide See Bird Email

By the numbers

Bird

Deliverability scale

~40% of commercial email

Message retention

30 days

Proven at peak

19.9B emails, BFCM 2025

What SendGrid is great at.
Where Bird is different.

What SendGrid is great at

Brand ubiquity and procurement comfort. One of the most widely integrated send APIs and SDKs in the industry, already on the vendor list at most enterprises, with Twilio behind it. The SendGrid name is especially well known among email developers.

A customer-facing SMTP relay. smtp.sendgrid.net is a drop-in for legacy systems and off-the-shelf software that only speak SMTP. Bird does not offer a customer SMTP relay, so if you need one, SendGrid is the better fit.

Built-in email address validation. A real-time and bulk validation API for list hygiene, with typo suggestions and spam-trap detection. Bird does not offer this today.

The reputation you have already warmed. If your team has run dedicated IPs on SendGrid for years, that specific IP reputation is real and worth preserving. Moving means re-warming, which is the main switching cost to plan for.

Where Bird is different

Built on SparkPost. Bird’s email runs on SparkPost, the deliverability platform Bird acquired in 2021. It carries about 40% of the world’s commercial email and brings more than a decade of IP-reputation and deliverability engineering. The brand is newer; the sending engine is not.

Channels beyond email. Send email, SMS, and voice from one API and one auth model, as part of Bird’s wider omnichannel platform. With SendGrid, SMS and voice live on separate Twilio products and accounts.

A modern API. Errors as values with .safe(), an idempotency key that is reused across retries, scoped API keys, an OpenAPI 3.1 spec, and a hosted MCP server for agents, shipped as the default, not bolted on.

Lower cost at scale. At the volumes most senders hit, Bird’s published price comes in under SendGrid’s: $170/mo versus $249 at 250K, and $525/mo versus $799 at 1M for the nearest plan up. Compare plans for feature fit.

Longer message retention. Bird keeps the stored body of a sent message for 30 days. SendGrid keeps searchable activity for a shorter default window, with full history to 30 days via its Email Activity add-on.

The matrix

Capability by capability.

SendGrid wins on a customer SMTP relay and built-in email validation, and its name is more familiar to email developers. Bird wins on developer experience, lower cost at scale, message retention, and channels beyond email, and matches SendGrid on deliverability by running on the SparkPost platform it acquired in 2021. Both readings are accurate today.

Capability	Bird	SendGrid
Transactional send API	HTTP API (POST /v1/email/messages) with an error-as-value SDK option.	Mature v3 mail/send API with SDKs in nearly every language. Up to 1,000 personalizations per call.
SMTP relay	Not offered to customers. Bird delivers over SMTP internally but exposes only the HTTP API.	Customer-facing relay at smtp.sendgrid.net (port 587, user 'apikey'). A drop-in for systems that only speak SMTP.
Email address validation	Not available today.	Real-time and bulk validation API with typo suggestions and spam-trap detection (Pro and Premier).
Idempotency on send	Idempotency-Key header on the send call; the key is reused across retries.	No idempotency key on mail/send. Consumers dedupe events with sg_event_id themselves.
Stored message retention	Stored message body available for 30 days.	Searchable activity for a short default window; full history to 30 days via the Email Activity add-on.
Cost at comparable volume	Lower published price at the volumes most senders hit: $170/mo at 250K, $525/mo at 1M (Premier).	Higher at the nearest tier: $249/mo at 300K, $799/mo at 1.5M (Pro).
Dedicated IPs and pools	Dedicated IPs and IP pools with roughly 30-day automated warm-up.	Dedicated IPs and automated warm-up, available on Pro and Premier only.
Deliverability heritage	Runs on SparkPost, the platform Bird acquired in 2021: roughly 40% of the world’s commercial email and 10+ years of IP-reputation engineering.	A mature deliverability stack with a decade of operational scale.
SPF, DKIM, DMARC, BIMI	SPF, DKIM, and DMARC signed for verified domains, with optional BIMI.	Domain authentication via CNAME (SPF and DKIM), customer-configured DMARC, and BIMI support.
Event webhooks and signing	Twelve event types with Standard Webhooks signing.	Rich deliverability and engagement events with SendGrid’s own ECDSA signature scheme.
Channels beyond email	SMS and voice in the same API, plus a wider omnichannel platform.	Email only. SMS and voice are separate Twilio products on a separate account.
Procurement familiarity	MessageBird and SparkPost: an established vendor with many enterprises already contracted to Bird B.V.	The SendGrid name is widely recognised among email developers and common on vendor lists.

The same send

The send call has a similar shape.

Sending one HTML email. SendGrid throws on error, so the common path needs try/catch. Bird returns a typed result you can destructure, so the common path has none. The fields map directly.

SendGrid

send.ts

import sgMail from "@sendgrid/mail";

sgMail.setApiKey(process.env.SENDGRID_API_KEY!);

try {
  await sgMail.send({
    to:      "customer@example.com",
    from:    "onboarding@yourdomain.com",
    subject: "Your March invoice",
    html:    "<p>Attached.</p>",
  });
} catch (err) {
  console.error(err);
}

Bird

send.ts

import { BirdClient } from "@messagebird/sdk";

const bird = new BirdClient({ apiKey: process.env.BIRD_API_KEY! });

const { data, error } = await bird.email
  .send({
    from:    { email: "onboarding@yourdomain.com", name: "Acme" },
    to:      ["customer@example.com"],
    subject: "Your March invoice",
    html:    "<p>Attached.</p>",
  })
  .safe();

if (error) console.error(error.message);
else console.log(data.id);

Pricing at a glance

SendGrid has no 250K or 1M tier, so those rows show its nearest plan (Pro 300K and Pro 1.5M). Plan features differ, so compare for fit.

Emails / month	Bird	SendGrid
50,000	$20/mo (Starter) · $75/mo (Premier)	$19.95/mo (Essentials)
250,000	$170/mo (Premier)	$249/mo (Pro, 300K tier)
1,000,000	$525/mo (Premier)	$799/mo (Pro, 1.5M tier)

Switching cost

Low.

The conceptual model matches: domain authentication, a suppression list, event webhooks per message state, and dedicated IPs at higher volume. The send fields map directly, and SendGrid’s delivered and bounce events map to Bird’s email.delivered and email.bounced.

The real work is the dedicated-IP warm-up if you have reputation to preserve, plus the suppression-list import and webhook re-pointing. The migration guide walks through each step.

Read the migration guide See the email surface

Bird vs SendGrid: common questions

Is Bird a drop-in replacement for SendGrid?+

For the HTTP send API, close to it. The request fields and webhook events map directly, so the code change is small. The exception is SMTP: SendGrid offers a customer SMTP relay and Bird does not, so systems that send over smtp.sendgrid.net need to move to the HTTP API.

Does Bird offer an SMTP relay like SendGrid?+

No. Bird exposes an HTTP send API; it delivers over SMTP internally but does not provide a customer-facing SMTP relay. If you must send over SMTP from off-the-shelf software, SendGrid is the better fit.

How does Bird’s deliverability compare?+

Bird’s email runs on SparkPost, the deliverability platform it acquired in 2021, which carries about 40% of the world’s commercial email. That brings a decade-plus of IP-reputation engineering, plus dedicated IPs and pools, automated warm-up, and SPF, DKIM, DMARC, and BIMI signing for verified domains. SendGrid offers the same primitives with its own decade of scale.

Is Bird cheaper than SendGrid?+

At 50,000 emails a month they are about even ($20/mo Bird Starter versus $19.95/mo SendGrid Essentials). At higher volumes Bird is lower: at 250K it is $170/mo on Premier versus $249/mo for SendGrid’s Pro 300K tier, and at 1M $525/mo versus $799/mo for SendGrid’s Pro 1.5M tier. Plan features differ, so compare for fit.

How long does migrating from SendGrid take?+

The code change is small because the send fields and webhook events map directly. The longer part is warming a dedicated IP if you have existing reputation to preserve, plus importing your suppression list and re-pointing webhooks. The migration guide covers each step.

Does Bird have email address validation like SendGrid?+

No, Bird does not offer email address validation today. If real-time or bulk address validation is a hard requirement, SendGrid covers it directly.

Compare Bird to other platforms

See how Bird compares to the other transactional email platforms.

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