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SPECIFICTION
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Growmail vs Postronomy

Growmail

growmail.com

Postronomy

postronomy.com

Side by side

FigureGrowmailPostronomy
Price from—$199/mo
Free plan——
Free trial——
Open source——
WebYesYes
APIYesYes
Plans published12
Spec score · Direct Mail Automation Software7.9 (#8)7.3 (#19)
AudienceGrowmail describes serving local businesses, franchises, and brands including home services businesses.The FAQ says Done For You is better suited to customers sending 3500+ pieces per month, while Self Serve typically suits customers sending about 300 pieces monthly or using automated campaigns and gifting.
IntegrationsDirect Mail Manager lists Salesforce, Shopify, Intuit, Capsule, Planning Center, and Zapier, and supports other CRMs with webhooks or API calls.The FAQ says CRM integration is available in most cases through a Zapier integration configured by support using an API key.
SupportGrowmail offers marketing consultations and says its support team can advise customers on product selection and campaigns.The plans include one-on-one live chat and Zoom support, and the FAQ says subscribers receive one-on-one onboarding and ongoing support.

Plans

Growmail

  • New Mover Direct Mail$69.95, paid once

Growmail pricing →

Postronomy

  • Pro Premium - Self Service$199 a month
  • Business - Concierge$499 a month

Postronomy pricing →

In their own words

Growmail

Growmail provides print and direct-mail services for businesses sending postcards, brochures, flyers, and letter mailers to selected audiences. Targeting can use neighborhood, ZIP code, route, demographics, income, or interests. Products include Every Door Direct Mail, targeted direct mail, and Discount Zone mailers, with QR-code and call-tracking add-ons for campaign measurement. The Direct Mail Manager API syncs customer data, personalizes postcards, and triggers sends from customer actions. Listed connections include Salesforce, Shopify, Intuit, Capsule, Planning Center, and Zapier; other CRMs can connect through webhooks or API calls. Direct Mail Manager states that it has no batching or minimums and guarantees mailing within 48 hours. Most campaigns are produced and mailed within 5–7 business days after proof approval, and every order includes a digital proof requiring approval. Growmail mails across the continental United States, Hawaii, Alaska, Puerto Rico, and the U.S. Virgin Islands. Pricing is on request, with a New Mover Direct Mail option at $69.95, paid once for a minimum of 100 mailers.

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Postronomy

Postronomy has no write-up on Specifiction yet; its figures are above.

Visit postronomy.com