Bird vs Warmy for email deliverability

Choose the deliverability job first: measure inbox placement, diagnose a sender problem or change a sending practice. These tasks need different evidence and should not be collapsed into one score.

Start now ↗Talk to sales ↗

Where Warmy fits

Warmy presents email warmup and deliverability tools. Compare the specific workflow you plan to use with measurement, sender authentication and sending-infrastructure controls.

Read Warmy documentation ↗

Where Bird fits

Bird Inbox Insights combines placement observations, seed tests and reputation views with your sending data. Dedicated-IP warmup and domain authentication address separate parts of the sending setup.

Explore Bird Email deliverability ↗

Compare the deliverability workflow

Capability	Bird	Warmy
Warmup model	Use dedicated-IP warmup when ramping traffic on Bird sending infrastructure.	Connected-mailbox warmup sends through your own mail server or mailbox provider.
Monitoring	Run seed tests and inspect placement and reputation for verified domains.	Evaluate the deliverability tools used alongside the warmup process.
Sending account	Send application email through Bird or evaluate a separately retained sender.	Connect through SMTP/IMAP or provider OAuth; Seed List sends use your existing email platform.
Migration scope	Map the required measurement and sending process; preserve old reports.	Inventory mailbox-specific activity that still needs its own implementation.

Run the same customer journey

Use the same authenticated domain, content, sending route and time window for a controlled evaluation. Record seed-pool differences and actual recipient outcomes. A seed inbox rate is a measurement of those mailboxes, not a guarantee for every subscriber.

Start the working example ↗

Make the switch deliberately

Start by recreating the measurement baseline in Bird and retaining old reports. Do not change the sending provider, IP, content and audience at once; that makes it difficult to attribute the result.

Migrate from Warmy ↗

Questions before switching

Does a seed test guarantee inbox placement?

No. It reports where the tested messages landed in the measured mailboxes. Compare the provider, cohort and observation window, then inspect your actual sending and customer outcomes.

Is inbox placement the same as delivery rate?

No. Delivery means the receiving server accepted the message. Placement measures where a message landed. Keep those observations separate when investigating a sending problem.

Should I change my sender when changing monitoring?

Establish the new measurement baseline first. Changing the sender, IP, content and audience at once makes the result difficult to interpret.

Choose your next step

Migration guideMap the current integration, test the receiving path and plan the traffic transition.Email deliverability resourcesFind quickstarts, implementation guides and troubleshooting.Compare other optionsReview the alternatives against the customer workflow you need.Review Bird pricingCheck the published plan or rates for the workload you are comparing.

Test it with your own workflow.

Start with the guide, or bring your integration and migration requirements to our team.