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ColdSEO
What it is
ColdSEO is a link-building outreach platform for SEO professionals that helps find prospects, send personalized email campaigns, and track backlink placements. Prospect Finder can search by keyword, competitor backlinks, content topic, or uploaded domains, with filters for authority, traffic, language, country, and spam score. Hunter.io helps locate verified email addresses and checks them before campaign sends. ColdSEO uses Anthropic's Claude API to create a personalized opening sentence for each prospect. Campaigns can send through Gmail, Google Workspace, Microsoft 365, or custom SMTP. Replies are organized into threads and categories, while campaigns periodically check replied prospects' websites for backlinks to a chosen target URL. Deliverability tools include inbox rotation, send caps per inbox, warmup, unsubscribe links, and List-Unsubscribe headers. The free plan includes one inbox, 50 prospect credits and 100 email sends monthly, 25 AI personalizations, and one active campaign. Pro costs $79 a month and Agency costs $199 a month. Monthly credits expire, and campaigns pause at the cap; one-time credit packs remain usable until spent.
For and against
For
- Searches prospects using keywords and competitor backlinks.
- Hunter.io checks email addresses before campaign sends.
- Campaign replies are threaded and categorized.
- Backlink checks target a specified URL.
- Free plan includes one connected inbox.
Against
- Monthly plan credits do not roll over.
- Campaigns pause when they reach the monthly cap.
- API access is not available.
The verdict
ColdSEO brings prospect discovery, email outreach, and backlink monitoring into one workflow. Check monthly limits and the paid plan costs against your campaign needs.
Who it suits
ColdSEO is aimed at SEO consultants, freelancers, in-house SEO leads, and link-building agencies. Its free plan may suit users with modest outreach needs, while larger teams can consider Pro or Agency.
Plans and prices
Free
1 connected inbox · 50 prospect credits/mo · 100 email sends/mo · 25 AI personalizations/mo
Read 29 Sep 2026 · coldseo.com
Pro
5 connected inboxes · 2,000 prospect credits/mo · 5,000 email sends/mo · 1,000 AI personalizations/mo
Read 29 Sep 2026 · coldseo.com
Agency
25 connected inboxes · 10,000 prospect credits/mo · 25,000 email sends/mo · 5,000 AI personalizations/mo
Read 29 Sep 2026 · coldseo.com
On the record
- AI personalization
- ColdSEO uses Anthropic's Claude API to generate a personalized opening sentence for each prospect.coldseo.com · read 29 Sep 2026
- Audience
- ColdSEO identifies SEO consultants and freelancers, in-house SEO leads, and link-building agencies as its intended users.coldseo.com · read 29 Sep 2026
- Compliance
- The privacy policy describes GDPR and CCPA data rights, and the terms require users to comply with CAN-SPAM, GDPR, CASL, and other applicable laws.coldseo.com · read 29 Sep 2026
- Deliverability
- The service provides inbox rotation, per-inbox send caps, warmup, unsubscribe links, and List-Unsubscribe headers.coldseo.com · read 29 Sep 2026
- Email finding
- ColdSEO integrates Hunter.io to find verified email addresses and automatically checks addresses before campaign sends.coldseo.com · read 29 Sep 2026
- Email providers
- Users can connect Gmail, Google Workspace, Microsoft 365, or a custom SMTP server for campaign sending.coldseo.com · read 29 Sep 2026
- Notable limits
- Monthly plan credits do not roll over, campaigns pause at the monthly cap, and one-time credit packs remain available until used.coldseo.com · read 29 Sep 2026
- Privacy
- ColdSEO says it does not sell user data or share prospect lists between customers; it lists Stripe, Anthropic, Hunter.io, Mozscape/DataForSEO, and email infrastructure providers as subprocessors.coldseo.com · read 29 Sep 2026
- Prospect discovery
- The Prospect Finder searches by keyword, competitor backlinks, content topic, or uploaded domains, with filters for authority, traffic, language, country, and spam score.coldseo.com · read 29 Sep 2026
- Purpose
- ColdSEO is a link-building outreach platform for SEO professionals that finds prospects, personalizes and sends outreach, and tracks backlink placements.coldseo.com · read 29 Sep 2026
- Reply and link tracking
- Replies are threaded and categorized, and campaigns periodically scan replied prospects' sites for backlinks to a specified target URL.coldseo.com · read 29 Sep 2026
- Security
- The privacy policy says SMTP credentials are encrypted at rest with AES-256-GCM, passwords use bcrypt cost 12, traffic is HTTPS-only, and privileged actions are logged.coldseo.com · read 29 Sep 2026
- Support
- The company lists [email protected] and a contact form; Pro and Agency customers receive priority email and chat support.coldseo.com · read 29 Sep 2026
