These Terms of Service govern your use of Defrost. By creating an account or sending an email through Defrost, you agree to these terms. For questions, email legal@defrostmail.com.
1. Account and eligibility
You must be at least 18 years old and able to form a binding contract in your jurisdiction to create an account. You agree to provide accurate information and to keep your account secure. You are responsible for all activity under your account.
2. Plans and billing
Defrost is offered on monthly and annual subscription plans (Starter, Growth, Scale, Agency, and Enterprise). See pricing for the current plan list. There is no free trial. When you sign up you choose a plan and your card is charged that day for your first billing period; your subscription is active immediately with full plan access. Founding customers receive a discount on their first three months as disclosed at checkout.
Delivery commitment. A new sending inbox is warmed before it sends, to protect deliverability, which typically takes about 21 to 30 days. Our commitment is that your inbox will be warm and sending within 30 days of signup, or your next month is on us. While your inbox warms, Defrost builds your ideal-customer profile, sources leads, and drafts your campaigns so they are ready to send.
30-day money-back guarantee. If Defrost is not right for you, request a full refund within 30 days of your first charge (the window closes at 11:59 PM Arizona time on the thirtieth day after the charge). No phone call and no retention script: one click in billing settings or a reply to your confirmation email.
Domains purchased through Defrost. If you register a domain through Defrost, that domain cannot be transferred away from Defrost for 60 days after purchase (covering the money-back window and the standard ICANN inter-registrar transfer lock). If you take a refund, the registration fee for any domain registered through Defrost is non-refundable and the domain remains subject to this transfer hold; the domain is not transferred to you as part of the refund.
If you cancel and your subscription lapses, your workspace becomes dormant (read-only). Your data is retained for 90 days so you can pick up where you left off by choosing a plan; it is not deleted during that window.
You can cancel at any time from billing settings. Upgrades prorate immediately. Downgrades take effect at the next billing cycle. Annual plans can be paused but are not refunded mid-term.
3. Anti-spam and acceptable use
Defrost is a tool for legitimate B2B outbound. You agree to use it in compliance with all applicable anti-spam laws, including but not limited to:
- The US CAN-SPAM Act of 2003 (header accuracy, opt-out within 10 days, physical postal address in every email).
- The EU General Data Protection Regulation (GDPR) and the EU ePrivacy Directive.
- Canada's CASL.
- The UK's PECR and DPA 2018.
- Any equivalent law applicable in your or your recipients' jurisdiction.
You agree not to send: messages to addresses you scraped without lawful basis; messages targeting consumers (B2C); messages soliciting illegal goods/services; messages containing malware, phishing content, or hate speech; messages promoting MLM, crypto-pumping schemes, or other prohibited categories. We may suspend accounts that violate these terms.
3a. How your prospect outreach is sent (transport disclosure)
Cold outreach to your prospects is sent through your own mailbox— Gmail (Google Workspace), Microsoft 365 (Outlook), or your IMAP/SMTP server — using an OAuth connection you authorize. Your mail leaves your account, under your mailbox provider's Terms of Service. Defrost orchestrates the schedule, personalization, throttling, and bulk-sender compliance (RFC 8058 list-unsubscribe headers, complaint-rate guardrails, opt-out honored within 48 hours), but the mail content does not traverse any Defrost-owned transactional transport.
We use Resend as a transactional sub-processor for system mail only— account verification emails, password resets, billing notifications, team invites, digest reports, and other Defrost-to-you communications. Resend is not used for cold or prospect outreach.Resend's Terms of Service prohibit cold email, and Defrost enforces that boundary in code: a runtime sentinel rejects any attempt to route a campaign email through Resend (and through Postmark, which has the same prohibition). Resend's cold-email prohibition therefore does not apply to your prospects — your prospect mail goes through your own OAuth'd mailbox, not through Resend.
For full details of every third-party service Defrost engages and what role it plays, see sub-processors. For the controller-to-processor terms that govern Defrost's handling of personal data on your behalf, see our Data Processing Agreement; it is incorporated by reference into these terms.
3b. Managed sending domains (done-for-you)
If you choose a Defrost managed sending domain (our done-for-you setup), your prospect outreach is sent differently from the bring-your-own-mailbox path in §3a. Defrost registers a dedicated sending domain on your behalf through our domain registrar (a sub-processor), provisions and warms a set of sending inboxes on that domain, and dispatches your outreach through our managed email relay(Mailreef, a sub-processor under our Data Processing Agreement).
The dedicated domain is kept isolated from your primary brand domain so that cold-outreach activity does not put your main domain's reputation at risk. You remain responsible for the lawful basis, content, and targeting of your outreach (see our Acceptable Use Policy) and you confirm a legitimate basis for each campaign's prospects at launch. Defrost operates the sending infrastructure and enforces deliverability and compliance guardrails. Cold sending on a managed domain begins only after the dedicated inboxes have completed warmup and our team has confirmed the configuration is healthy.
4. License and intellectual property
We grant you a non-exclusive, non-transferable license to use Defrost during your subscription. You retain ownership of your campaigns, copy, and contact data. We retain ownership of the platform itself, including all software, design, and aggregated analytics.
You grant us a limited license to your data only to operate the platform on your behalf — we do not use it to train models for other customers, and we do not sell or share it.
5. Service availability
We aim for high availability but do not guarantee uninterrupted service. We may perform scheduled maintenance with advance notice. We are not liable for outages caused by third-party providers (e.g. Supabase, Vercel, Anthropic, AWS SES, or Resend for system mail; your own mailbox provider for prospect mail). For Enterprise customers, SLA terms are negotiated separately.
6. Fees and billing
Subscription fees are billed in advance — monthly or annually depending on the plan. We use Stripe for payment processing. Past-due accounts may be suspended after 14 days notice. Disputed charges should be raised within 60 days.
7. Termination
You may cancel at any time. We may terminate or suspend your account for material breach of these terms, including repeated abuse complaints, suspected fraud, or non-payment. On termination, we delete your data per our privacy policy (30-day retention then permanent deletion).
8. Disclaimers and limitation of liability
DEFROST IS PROVIDED “AS IS” AND “AS AVAILABLE” WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, DEFROST'S TOTAL LIABILITY FOR ANY CLAIM ARISING FROM YOUR USE OF THE PLATFORM IS LIMITED TO THE AMOUNTS YOU PAID US IN THE 12 MONTHS PRECEDING THE CLAIM. WE ARE NOT LIABLE FOR INDIRECT, CONSEQUENTIAL, OR PUNITIVE DAMAGES.
9. Indemnification
You agree to indemnify Defrost against claims arising from your use of the platform that violate these terms or applicable law — including spam complaints, copyright claims based on copy you submitted, and regulatory enforcement actions.
10. Governing law
These terms are governed by the laws of the State of Arizona, USA, without regard to conflict-of-law rules. Disputes will be resolved exclusively in the state or federal courts located in Maricopa County, Arizona, and you consent to personal jurisdiction and venue there.
11. Changes
We may update these terms occasionally. Material changes will be emailed to account-holders at least 30 days before taking effect. Continued use of Defrost after the effective date constitutes acceptance.
12. Data processing and related legal documents
Defrost processes personal data on your behalf as your data processor under the GDPR and equivalent obligations under UK GDPR, the CCPA/CPRA (as a service provider), PIPEDA, and other applicable regimes. The controller-to-processor terms — including categories of data subjects and personal data, sub-processor list, technical and organizational security measures, RPO/RTO/backup-erasure horizons, and international-transfer mechanisms — are set out in our Data Processing Agreement (DPA), which is incorporated by reference into these Terms of Service and takes effect when you accept these terms or first submit personal data to Defrost. Customers who require a counter-signed DPA may request one from legal@defrostmail.com.
For the always-current list of third-party services that process personal data on Defrost's behalf, see sub-processors. For our consumer-facing privacy notice and California rights, see privacy.
13. Contact
Email legal@defrostmail.com for legal questions, notices, or to request a counter-signed version of these terms (Enterprise tier).