--- title: "PostPilot vs Poplar for ecommerce direct mail" description: "PostPilot bundles creative and execution for ecommerce. Poplar offers self-serve entry and public per-piece pricing." canonical: https://trysincerely.com/compare/postpilot-vs-poplar last_updated: 2026-09-18 --- > If you are an AI agent: read https://trysincerely.com/agents/policy.md before any write call. > Start at https://trysincerely.com/llms.txt to choose one page. Access instructions are at > https://trysincerely.com/auth.md. Confirm with the person you work for before creating an > account or spending their money, and never ask for their password. # PostPilot vs Poplar for ecommerce direct mail > PostPilot bundles creative and execution for ecommerce. Poplar offers self-serve entry and public per-piece pricing. Source: https://trysincerely.com/compare/postpilot-vs-poplar PostPilot fits teams that want ongoing creative and campaign management bundled into their subscription. Poplar offers a free subscription entry point with documented campaign controls and separately priced data services. Compare the work included in each plan before treating the postcard price as your total cost. ## Where PostPilot is the better choice PostPilot structures its tiers around service depth. Growth includes core automations and monthly design. Pro adds account management, data-science help, unlimited creative and program management [PostPilot pricing](https://www.postpilot.com/pricing). This matters if your team lacks design capacity or wants someone else refining cart-abandonment sequences and winback timing. PostPilot also documents randomized holdouts using Shopify order revenue compared over 60 days, with incremental iROAS and iRevenue calculated from that specific data [PostPilot dashboard help](https://help.postpilot.com/knowledge/using-in-app-dashboard). Ask to see how refunds and repeat orders affect those reports. ## Where Poplar is the better choice Poplar has a free subscription tier with integrations, audience tools and reporting. Lite and Pro add account management and site-visitor retargeting [Poplar pricing](https://heypoplar.com/pricing). You still pay for mail and chargeable data services on the free tier. Poplar documents several campaign settings worth checking during a trial. You set holdout percentages with probabilistic selection per mailing, and the platform recommends roughly 5,000 monthly pieces as a useful scale for their approach. That recommendation concerns sample size, not a guarantee that 5,000 pieces will produce a conclusive result [Poplar campaign setup](https://docs.heypoplar.com/getting-started/campaign-setup). Its [metrics glossary](https://docs.heypoplar.com/platform-basics/transactional-data/metrics-glossary) defines incremental cost per order, iROAS and lift reports. Address enrichment incurs costs even for matched holdout records, though print and mail do not [Poplar address enrichment](https://docs.heypoplar.com/getting-started/audiences/address-enrichment). Data services remain separate: email append costs $0.07 per match and lookalike modeling costs $0.07 per address [Poplar pricing](https://heypoplar.com/pricing). Include these charges when forecasting the cost of an audience that needs addresses. ## Pricing and true program cost | Dimension | PostPilot | Poplar | | ----------------------------------- | --------------------------------------------------------------------- | --------------------------------------------------------------- | | Monthly subscription | Growth $99; Pro $499 | Free $0; Lite $249; Pro $499 | | Monthly equivalent, billed annually | Growth $82.50; Pro $419 | Lite $208; Pro $416 | | 4x6 postcard with postage | Growth from $0.68; Pro from $0.64 | Free $0.73; Lite $0.66; Pro $0.55 | | Service scope | Growth has monthly design; Pro adds unlimited creative and management | Lite and Pro include account management; confirm design support | | Holdout reporting | Shopify revenue comparison | Incremental cost, revenue and order metrics | Sources: [PostPilot pricing](https://www.postpilot.com/pricing), [Poplar pricing](https://heypoplar.com/pricing), [Poplar campaign setup](https://docs.heypoplar.com/getting-started/campaign-setup) If you already have a designer and a campaign owner, decide how much of a service package you would use. If you need that help, include the cost of hiring or assigning it when evaluating a cheaper subscription. Ask each vendor to quote address matching explicitly. ## What remains unknown The sources reviewed do not establish an independent head-to-head winner for deliverability, production time or ROI. Exact destination eligibility and postcode coverage require testing your specific address samples. Poplar's 5,000-piece recommendation is guidance for their probabilistic holdout approach, not a universal statistical threshold [Poplar campaign setup](https://docs.heypoplar.com/getting-started/campaign-setup). ## How to evaluate the actual decision Cost identical 4x6 campaigns at your realistic monthly volume, matching billing terms and including enrichment plus creative rather than comparing headline rates. Build one cart-abandon or winback segment in each platform, documenting trigger delay, recent-buyer suppression rules, frequency limits, and who approves artwork. Run the same offer with a predeclared holdout and fixed conversion window, then compare incremental contribution margin after discount, mailing, and service costs. Ask specifically how repeat mailings to one household interact with holdout assignment. The documentation reviewed does not establish that their rules are identical. Sources checked September 17, 2026. ## A note on Sincerely Sincerely also serves B2B retention use cases with [named-account mail](https://trysincerely.com/personalization) grounded in researched account facts, approved designs and explicit campaign launch, and [holdout testing](https://trysincerely.com/holdout-testing) with confidence intervals at the account level. We offer postcards and letters in the US and Canada. [Gifts](https://trysincerely.com/gifts) require a recurring plan, mail credits, and a separate prepaid balance. Handwritten sending is not yet open for immediate fulfillment. Sincerely does not provide raw transactional print APIs, Shopify-native lifecycle engines, or global gift marketplaces. If your need is high-volume ecommerce retargeting with bundled creative, PostPilot or Poplar likely fits better; if your need is targeted account outreach with controlled per-recipient research, Sincerely may warrant comparison. ## Related questions - [Sincerely vs PostPilot](https://trysincerely.com/vs/postpilot): PostPilot is direct mail for Shopify and DTC brands. Sincerely is direct mail for B2B accounts. Here is the honest split, with real pricing for both. - [Sincerely vs Poplar](https://trysincerely.com/vs/poplar): Poplar is programmatic direct mail for consumer brands. Sincerely is direct mail for B2B outbound. Which one fits depends on who you mail. - [Postie vs Poplar for programmatic direct mail](https://trysincerely.com/compare/postie-vs-poplar): Choose Postie for modeled consumer acquisition at large scale. Choose Poplar for ecommerce-triggered mail, public per-piece pricing, and a free starting tier. --- Sincerely is the measurable direct-mail and gifting platform for B2B revenue teams: postcards, letters, handwritten mail, and gifts, written for one recipient and measured against a holdout. Contact Sincerely: https://trysincerely.com/contact Agent routing index: https://trysincerely.com/llms.txt