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WarmupHero
What it is
WarmupHero is an email warmup service available on the web and as an extension. It gradually increases an email address’s sending volume to build its reputation and reduce spam risk. The service says it works with all email providers, takes one minute to set up, and runs on autopilot. It exchanges warm-up messages with real people, sending personalized emails in sequence and keeping them in existing conversation threads. Replies to messages sent from a user’s account are automated. WarmupHero also opens warm-up messages, marks them important, and moves them back to the inbox if they land in spam. Analytics show whether messages reach the inbox, spam, or folders such as Promotions and Updates. Users can customize email content and add signatures with images or links. Connections include Office365 API and an SMTP/IMAP method for other business accounts; SmartReach.io users connect with a generated API key before linking an email account. The listed free plan is for use with SmartReach.io plans. The privacy policy says WarmupHero does not access, read, or delete users’ emails, but may process information provided about recipients and customers.
For and against
For
- Works with all email service providers.
- Warm-up exchanges use real people.
- Analytics show inbox, spam, and category placement.
- Users can customize messages and signatures.
Against
- The listed free plan requires SmartReach.io.
- Setup methods vary by account type.
- Recipient and customer information may be processed.
The verdict
WarmupHero combines automated warm-up activity with placement analytics and message customization. Its listed free option is tied to SmartReach.io plans, so account compatibility is worth checking first.
Who it suits
It may suit people working on email campaigns who want to gradually warm an inbox and monitor message placement. The listed free plan is for users with SmartReach.io plans.
Plans and prices
WarmupHero with SmartReach.io
Use with SmartReach.io
Read 7 Oct 2026 · warmuphero.com
On the record
- Analytics
- Its analytics show how many emails reach the inbox, spam, or category folders such as Promotions and Updates.warmuphero.com · read 7 Oct 2026
- Automated setup
- The site says WarmupHero works with all email service providers, takes one minute to set up, and runs on autopilot.warmuphero.com · read 7 Oct 2026
- Conversation threads
- WarmupHero says it keeps warm-up emails in the same thread and automates replies to messages sent from the user’s account.warmuphero.com · read 7 Oct 2026
- Customization
- Users can customize warm-up emails and include a personalized signature with images or links.warmuphero.com · read 7 Oct 2026
- Data handling
- WarmupHero’s privacy policy says it does not access, read, or delete users’ emails, while it may process information users provide about email recipients and customers.warmuphero.com · read 7 Oct 2026
- Email connections
- WarmupHero documents Office365 API connection and an “Other” method for business email accounts using SMTP and IMAP details.warmuphero.com · read 7 Oct 2026
- Intended users
- The FAQ includes questions about cold emailing and who should warm up an inbox, and the homepage describes improving email campaign deliverability.warmuphero.com · read 7 Oct 2026
- Purpose
- WarmupHero describes email warmup as gradually increasing sending volume to build an email address’s reputation and reduce spam risk.warmuphero.com · read 7 Oct 2026
- Security and hosting
- The privacy policy says personal data is stored and processed on servers exclusively in the European Union and names Google Cloud, Crisp.im, Google Analytics, and Mailgun as service providers.warmuphero.com · read 7 Oct 2026
- Sending pattern
- WarmupHero says it sends personalized emails sequentially to mimic human-like sending and incrementally increase volume.warmuphero.com · read 7 Oct 2026
- SmartReach integration
- The SmartReach.io integration uses a generated SmartReach API key, after which the user connects an email account.warmuphero.com · read 7 Oct 2026
- Spam handling
- The site says WarmupHero opens warm-up emails, marks them important, and moves warm-up messages back to the inbox if they land in spam.warmuphero.com · read 7 Oct 2026
- Support
- The site lists [email protected] as a support contact.warmuphero.com · read 7 Oct 2026
- Warmup network
- WarmupHero says users exchange warm-up emails with real people rather than fake email addresses.warmuphero.com · read 7 Oct 2026
