LettrLabs review

LettrLabs mixes printed postcards with robot-handwritten mail, and it leans into triggers that matter to local businesses. The free Starter tier covers delivery tracking, handwritten mail merge, address and delivery verification, CSV upload and open API access, with a 4x6 postcard at $0.76 and a handwritten card and envelope at $2.86. Premium at $399 per month adds real-time automations, native integrations and webhooks, real-time attribution, multi-touch and storm-triggered campaigns, on-demand list building, multiple users and the MailGPT copy and design agent, and its rates fall as low as $0.54 per postcard with a spend commitment. Enterprise adds holdout and A/B testing and a done-for-you service. Shopify and Klaviyo appear on the integrations page. The trade-off is that automation, the core reason to buy, sits behind the Premium fee, and the best handwritten rates need committed spend.

Who it is for

Home services and local businesses that want handwritten mail on autopilot

Price

Free Starter plan; Premium $399 per month; postage included in per-piece rates.

Premium Annual Monthly $399 /month
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Robot-handwritten envelopes, postcards and cards alongside printed postcards
• Real-time automations, native integrations and webhooks on Premium
• Storm and weather triggered campaigns, mover automation and radius mail
• MailGPT copy and design agent and multi-touch campaigns on Premium
• Holdout and A/B testing and a fully managed service on Enterprise

Strengths and weaknesses

• Strength: Starter is free and includes handwritten mail merge, address verification and open API access
• Strength: Postage is included in every per-piece price
• Strength: New accounts get $30 in free credit
• Weakness: Native integrations and real-time automations need Premium at $399 per month
• Weakness: Starter handwritten card and envelope costs $2.86 per piece
• Weakness: Lowest Premium rates are tied to a spend commitment

Key facts

• Free plan: Starter, pay per piece
• Paid plan: Premium $399/month
• Postage: Included
• Handwritten mail: Yes, robot-written

Where it ranks

LettrLabs is No. 5 in our Best Direct Mail Software verdict.