Sincerely review
A measured direct-mail platform for CRM-triggered B2B postcard and letter campaigns.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Sincerely is a direct-mail automation platform for B2B sales and marketing teams running outbound, account-based, renewal, revival, and expansion campaigns. It connects Salesforce and HubSpot data or accepts CSV uploads, then supports one-to-one personalized postcards and letters, address correction, approval workflows, delivery tracking, and rep follow-up tasks. Its multi-step CRM-triggered campaigns and account-level holdouts make it suited to teams that want to connect direct mail with pipeline measurement rather than send isolated mailers.
The pricing structure starts with a free Audit plan for CRM or CSV import, mailability audits, brand kits, design layouts, and draft generation, but it cannot mail pieces. Pilot costs $199 and includes 100 pieces, individually researched pieces, and an account-level holdout; that amount is credited toward the first month if the account continues. Core is $250 per month with 150 pieces, Salesforce and HubSpot sync, letters and postcards, human-approved drafts, holdouts, and rep follow-up tasks. Starter includes 350 pieces and standard reports. Growth adds 1,300 pieces, a full campaign library, approval workflows, spend limits, opportunity attribution, and program-level incrementality reports. Scale includes 3,700 pieces, governance and roles, spend thresholds, a named reporting contact, and the lowest per-piece prices.
Sincerely’s strongest distinction is the combination of personalized mail execution and measurement. Teams can trigger multi-step campaigns from CRM activity, route drafts through human approval, track delivery, and compare account outcomes through holdout groups. Integrations with Salesforce, HubSpot, CSV, Lob, and PostGrid support common data and mailing workflows. The tradeoff is a narrower platform footprint: access is web-only, there is no API, and the product centers on postcards and letters rather than broader fulfillment formats. Choose Sincerely for measured B2B direct-mail programs with CRM coordination; consider an alternative if API access or a wider range of physical mail formats is central to the workflow.
Sincerely pros and cons
- Where it wins
- Salesforce and HubSpot synchronization with CSV audience import
- Account-level holdouts measure campaign impact against a comparison group
- Address verification, approvals, tracking, and follow-up tasks in one workflow
- Where it doesn't
- Core starts at $250 per month
- Web-only platform with no API access
- The free Audit plan cannot mail pieces
Sincerely fact sheet, pricing and score →
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