Send postcards, letters, checks, and self-mailers programmatically. Postally handles print, postage, and delivery — you just make the API call.
curl -X POST https://api.postally.ca/v1/postcards/create \ -u "dm_live_your_key:" \ -H "Content-Type: application/json" \ -d '{ "to": { "name": "Jane Smith", "address_line1": "123 Main Street", "city": "Toronto", "state": "ON", "zip": "M5V 2T6" }, "front": "tmpl_abc123", "size": "4x6" }' # Response: Postcard created, in production queue { "id": "mp_7f3a...", "status": "pending" }
Mail Types
From marketing postcards to payroll checks, Postally handles every format your business needs.
Full-color, double-sided postcards perfect for marketing, announcements, and reminders.
Professional letters with optional custom envelopes, buckslips, and return envelopes.
MICR-printed checks with payee, amount, and memo fields. Ideal for vendor payments and refunds.
Tri-fold or bi-fold self-mailers — no envelope needed. Great for newsletters and catalogs.
Platform Features
A complete toolkit for sending, tracking, and managing physical mail at scale.
Create, deactivate, and reactivate API keys from the dashboard. Separate test and live environments.
SmartyStreets-powered validation for US and international addresses. Catch bad addresses before they cost you money.
Design mail pieces with HTML/CSS templates. Use merge variables like {{name}} for personalization at scale.
Send to thousands of recipients in a single API call. Approve campaigns and Postally handles batch production.
Get notified when mail is printed, shipped, or delivered. HMAC-signed payloads with automatic retry.
Automatically generate QR codes on mail pieces. Track scans with analytics — know when recipients engage.
Connect Postally to 5,000+ apps. Trigger mail from form submissions, CRM events, or any workflow.
AES-256-GCM encryption, RBAC with PHI access levels, and immutable audit logs. SOC 2 and HIPAA in progress.
Load credits and pay as you go. Volume bonuses at higher tiers. No monthly minimums, no surprises.
How It Works
No print vendors to manage, no postage accounts to set up. Just code.
Upload PDF designs or build HTML templates with merge variables. Manage recipients via API or bulk CSV import.
One POST request to /v1/postcards/create, /v1/letters/create, or /v1/checks/create. Include an Idempotency-Key for safe retries.
Postally renders the PDF, packages the job, and transmits to our print partner. Track status via webhooks or the dashboard.
Pricing
Load credits, send mail. No monthly fees, no contracts. Volume bonuses as you scale.
Load credits · Starting at $20 CAD
Automatic bonus credits at higher tiers
Prices shown are estimates and subject to change. Final pricing depends on mail type, size, and destination. All prepaid credit purchases are non-refundable. See our Terms of Service.
Security & Compliance
Enterprise-grade security and compliance from day one.
In progress — architecture ready
Erasure, access, export
Canadian privacy law
California privacy rights
SAQ A via Stripe
In progress — BAA ready
Get your API key in minutes. Test mode is free — no credit card required.