Agencies

Postbird for Agencies: Self-hosted email campaigns over your own SMTP

Self-hosted email campaigns over your own SMTP. Stop renting your audience back.

Agencies pay per-seat and per-client fees that scale with their success. Self-hosted, pay-once tools replace per-seat pricing with a flat cost that margins actually survive.

The tool this job usually means renting is Mailchimp, at $20+/mo (grows with your list) — roughly $240 a year, every year. Postbird does the job for a one-time $149 — running on infrastructure you control.

Fit check

Why it fits how agencies work

👥 Lists & subscribers

CSV import with dedupe and invalid-email reporting, public signup endpoint per list, CSV export, full status tracking (pending → subscribed → unsubscribed/bounced/complained).

For agencies, lists & subscribers pays off across every client account, with no per-seat math — and it's covered by the same one-time $149, not metered per month.

✅ Double opt-in by default

Signup → signed confirmation link; only confirmed subscribers get campaigns. Consent timestamp + IP stored for GDPR.

For agencies, double opt-in by default pays off across every client account, with no per-seat math — and it's covered by the same one-time $149, not metered per month.

🎯 Segments

Saved AND/OR filters — domain, name, custom fields, signup date, opened/clicked recent campaigns — with a live count while you edit.

For agencies, segments pays off across every client account, with no per-seat math — and it's covered by the same one-time $149, not metered per month.

Workflow

A typical workflow

STEP 01

Buy once on Whop

One-time $149 for the packaged version — no per-contact pricing, no subscription to escalate as your list grows.

STEP 02

Plug in your SMTP

Amazon SES ($0.10 per 1,000 emails), Postmark or Mailgun credentials. You inherit their deliverability reputation; Postbird handles the queue and throttle.

STEP 03

Import, build, send

CSV-import your list, drag blocks into an email, and send throttled campaigns with live progress and open/click reports.

What it costs, honestly

Postbird is $149, once. Mailchimp at $20+/mo (grows with your list) — roughly $240 a year, every year. At 1,000 contacts, Mailchimp Standard costs more than Postbird every eight months, forever. Break-even is ~7 months — and the bigger your list gets, the more you save.

FAQ

Agencies ask

Is Postbird worth it for agencies?

At 1,000 contacts, Mailchimp Standard costs more than Postbird every eight months, forever. Break-even is ~7 months — and the bigger your list gets, the more you save. Postbird costs $149 once; Mailchimp charges $20+/mo (grows with your list) — about $240 a year. For agencies, that fixed cost is the whole point: the tool is a one-time line item, not a monthly one.

Is it really free on GitHub?

Yes — MIT source at github.com/bensblueprints/postbird-mvp, always. $149 buys the packaged installer, 1-click setup and updates — and funds the open-source version.

Will my emails land in the inbox?

Deliverability is your SMTP provider's job, and Postbird is honest about that: use SES or Postmark credentials and you inherit their IP reputation. Mailchimp's managed sending infrastructure is genuinely convenient if you'd rather not think about SPF/DKIM at all — that's what the monthly fee buys.

Own Postbird forever — $149