ColdSEO vs MentionAgent

ColdSEO is a link-building outreach platform for SEO professionals, combining prospect discovery, personalized email campaigns and backlink monitoring. Prospect Finder searches 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 check them before a campaign sends. Anthropic’s Claude API generates a tailored opening sentence for each prospect. Campaigns can send through Gmail, Google Workspace, Microsoft 365 or custom SMTP. Replies are threaded and categorized, and campaigns periodically check replied prospects’ sites for links to a chosen target URL. Deliverability controls include inbox rotation, send caps, warmup and unsubscribe mechanisms. ColdSEO offers web and API access, but API access is not included in its plans. The free plan has one inbox, 50 prospect credits and 100 sends per month, 25 AI personalizations and one active campaign. Pro is $79 a month; Agency is $199 a month. Monthly credits expire, and campaigns pause at the cap.

MentionAgent finds relevant blogs and prepares personalized outreach pitches to help customers earn editorial backlinks. It checks prospects for authority and relevance, verifies editor or author email addresses, and holds every draft for customer approval. Customers can edit or discard drafts before sending. The service follows up on email threads, tracks replies, drafts responses, and records placements when links go live. Plans include a separate registered sending domain, a dedicated Gmail inbox, and inbox warmup. Beyond outreach, MentionAgent tracks whether ChatGPT, Gemini, or Claude mentions or cites a customer. Customers can manage drafts and replies in the web dashboard or through Telegram, and an MCP server connects with Claude, Claude Code, Cursor, or another MCP client. It is aimed at founders, small marketing teams, agencies, ecommerce brands, local services, and teams seeking AI search visibility. Starter costs $99 a month; a free trial is available, but there is no free plan. Each warmed inbox is limited to 40 cold emails per day.