InboxMonitor and InboxWatch
Use InboxWatch when you want hourly DNS and blacklist checks, or bounce and reply rates from a connected Instantly or Smartlead account.
Use InboxMonitor when you want a daily check, a scored result page, and email alerts, without connecting a sending tool.
Their site: inboxwatch.io
Read on November 12, 2026.
Side by side
| Topic | InboxWatch | InboxMonitor |
|---|---|---|
| Blacklists checked | The homepage names NordSpam, LashBack UBL, UCEPROTECT Level 1, PSBL, Mailspike, and s5h. It says Spamhaus is not queried. | PSBL and 0spam, for sending addresses the check can see. Spamhaus is not queried unless a paid key is set. A timeout or refusal is neither a listing nor a clean result. |
| How often | Hourly SPF, DKIM, DMARC, MX, and the named DNS blocklists, including a DNS-only watch with no API key. | Once a day. |
| Alerts | Email when authentication breaks or a watched list hits. Growth adds Slack, Microsoft Teams, or a webhook, and same-hour bounce and reply alerts when a key is connected. Starter keeps bounce and reply changes in the Monday report. | Email when a daily check gets worse. Paid plans include a weekly digest. Slack is on Agency and Agency Pro. |
| Result page | A public checker result with its own URL, and a signed-in view with a Monday keep, rest, or replace note. Reply rate needs an Instantly or Smartlead key. | A domain page in the app: a 0–100 score, Healthy, Watch, or At risk, and the finding that changed the score. |
| Price | Starter is $29 a month or $278 a year for 50 inbox slots. Growth is $44 a month or $420 a year for 300 inbox slots. The trial is 14 days and does not need a card. The public checker is free. | Free is 3 domains, no card. Starter is $39 a month or $390 a year for 25 domains. Agency is $129 or $1,290 for 100. Agency Pro is $249 or $2,490 for 300. Paid plans include a 14-day trial with no card. Add a card before it ends to stay on the plan. InboxRescue Audit is $149 once for one domain. |
They do this, we do not
- Checks run every hour. InboxMonitor runs once a day.
- The named blocklist set is longer than PSBL and 0spam, and it includes lists InboxMonitor does not query.
- Bounce rate and reply rate from Instantly or Smartlead are part of the product. InboxMonitor does not connect to those tools.
- InboxWatch's trial does not require a card. InboxMonitor's paid trial does not require a card either. The plans and check schedules still differ.
We do this, they do not
- The score page explains a fixed point deduction and labels it Healthy, Watch, or At risk.
- PTR and domain age are part of the same daily check.
- Agency and Agency Pro include shareable client reports. InboxWatch's homepage says it does not offer a white-label report or a client portal.
- InboxRescue is a separate done-for-you report. InboxWatch's homepage says it does not send, warm, or seed mail, and InboxMonitor does not either.
Questions
Is InboxMonitor an InboxWatch alternative?
For a scheduled authentication and blocklist watch, they overlap. InboxWatch checks more named lists, every hour, and can read Instantly or Smartlead. InboxMonitor checks two lists, once a day, and scores the result.
Can I use both?
Yes. The records are public DNS. One product does not block the other. You would be paying two schedules for overlapping checks.
How is pricing different?
InboxWatch Starter is $29 a month or $278 a year for 50 slots, with a 14-day trial and no card. InboxMonitor Starter is $39 a month or $390 a year for 25 domains, and the paid trial does not need a card. Free on InboxMonitor is 3 domains.
Sources
- https://inboxwatch.io/Hourly SPF, DKIM, DMARC, MX, and named DNSBLs; lists are NordSpam, LashBack UBL, UCEPROTECT Level 1, PSBL, Mailspike, and s5h; Spamhaus is not queried; optional Instantly or Smartlead reply and bounce rates; does not send, warm, or seed mail; no white-label report or client portal.
- https://inboxwatch.io/pricingStarter $29/month or $278/year for 50 inbox slots. Growth $44/month or $420/year for 300 inbox slots. 14-day trial, no card. Public checker is free. Alert differences between Starter and Growth are on that page.