Comparisons
Honest comparisons.
These pages are written by the engineering team, not marketing. Where a competitor is the better pick, we say so: Amazon SES if you want the lowest raw cost, SendGrid if you are already invested, Postmark for speed at low volume.
Bird runs transactional email on SparkPost, the platform it acquired in 2021 that carries about 40% of the world's commercial email, with SMS and voice on the same API. Each comparison covers cost, deliverability, and the actual API surface, and the migration guides show what switching takes.
If you find a claim on these pages that doesn't hold up, mail devs@bird.com and we'll fix it.
Pick the comparison that matches your stack.
Each page follows the same structure: what the other platform is great at, where Bird is different, a matrix table, side-by-side code, and an honest switching-cost estimate.
vs SendGrid
SendGrid set the email-API standard a decade ago. It is still ubiquitous and a safe choice, especially if you are already on it. For new builds, Bird wins on cost at scale, idempotency, and 30-day retention, with SMS and voice on the same account.
vs Amazon SES
Amazon SES is the cheapest way to push email, if you run the plumbing. Live in AWS and want the lowest raw cost, and SES is the better pick. Bird trades a higher per-message price for managed deliverability, a bearer-token API, and webhooks delivered to your URL.
vs Mailgun
Mailgun is a capable developer email platform. It has a few features Bird does not match, and the page says where it fits. Bird adds idempotency, 30-day message history, lower cost at higher volumes, and SMS and voice on one API.
vs Postmark
Postmark earned its reputation for fast, reliable transactional delivery. If speed at low volume is the whole need, it is excellent. Bird adds idempotency, materially lower cost at higher volumes, and omnichannel on the SparkPost network.
vs MailerSend
MailerSend is a clean, affordable email API. It has a few features Bird does not match. Bird adds idempotency, global SMS and voice on the same API, and a decade of SparkPost deliverability engineering.
vs Brevo
Brevo is an all-in-one suite: campaigns, CRM, SMS, WhatsApp, and chat. If you want marketing tooling bundled in, that is Brevo. Bird is built for transactional sending at depth, with idempotency and a developer-first API. They suit different buyers.