PostKnock

PostKnock

MedAlly LLC
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About

Get the email, physical address, and device data for real-time retargeting. Grow your email list by collecting more first-party data and leveraging plug-and-play audiences to scale your online advertising campaigns more profitably. Capture all the high-intent traffic on your site that doesn’t convert. Generate high-intent ad-ready audiences tailored to your buyer persona. Multi-channel retargeting increases the value of each website visitor. With the power of email, ads, and postcards, convert your visitors in record time. Send automated email sequences via your preferred email marketing platform. Re-engage more visitors programmatically across millions of websites. Activate prospective buyers from the comfort of their homes. Never lose a customer again. Reactivate buyers on-demand and extend the lifetime value of each customer (even when you can’t reach them anymore). When a customer email bounces, Opensend replaces the undeliverable record with an active email address.

About

PostKnock is a marketing platform for small service businesses — dental practices, HVAC contractors, optometrists, chiropractors, veterinary clinics, and home services. It combines direct-mail postcards with automated phone follow-up in a single workflow. Choose a pre-built industry playbook (dental recall, HVAC seasonal, lapsed-patient re-engagement, etc.), upload a contact list, and PostKnock handles printing, USPS First-Class mailing, QR-code tracking, and post-delivery call queues with pre-loaded scripts for your front desk. Multi-wave campaigns sequence postcards and calls over weeks. CSV import auto-maps fields. Real-time tracking shows delivery, scans, completed calls, and revenue attribution. Free plan available — only pay for postcards sent. Pro from $99/month unlocks multi-wave sequencing, the full call queue, and analytics. No contracts. 30-day money-back guarantee.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Website managers and businesses wanting a tool to identify and convert every engaged visitor

Audience

Small service businesses — dental, optometry, HVAC, chiropractic, veterinary, med spa, home services. Owner-operated SMBs under ~$1M revenue.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$499 per month
Free Version
Free Trial

Pricing

$99/month
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 4.9 / 5
features 4.7 / 5
design 4.7 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Opensend
United States
www.opensend.com

Company Information

MedAlly LLC
Founded: 2026
United States
postknock.com

Alternatives

Alternatives

Categories

Categories

Integrations

Braze
Facebook
Google Cloud Platform
HubSpot CRM
HubSpot Customer Platform
Iterable
Klaviyo
Maestra
Magento
Sendlane
Shopify
WooCommerce
Zapier

Integrations

Braze
Facebook
Google Cloud Platform
HubSpot CRM
HubSpot Customer Platform
Iterable
Klaviyo
Maestra
Magento
Sendlane
Shopify
WooCommerce
Zapier
Claim Opensend and update features and information
Claim Opensend and update features and information
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