Side by side

SenderSignal vs Valimail Monitor

Both stand on email deliverability software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

SenderSignal

Free plan Web

SenderSignal combines monitoring, inbox placement tests, and sending warmup with a free tier and a 30-day trial. Review the plan caps and pause policy if you expect usage to exceed your allowances.

Visit SenderSignal

Valimail Monitor gives teams visibility into DMARC results and sender activity, with a free plan for up to five users. It is a monitoring product rather than a place to manage policy or SPF and DKIM configuration.

Visit Valimail Monitor

The facts

	SenderSignal	Valimail Monitor
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Web	Web
Lowest paid plan	Free or on request	Free or on request
Plans published	4	2
Maker	Not published	Not published
Website	sendersignal.com	valimail.com
On email deliverability software	#14 of 31	#16 of 31

SenderSignal: what it does well

Free tier covers two monitored domains.
Includes two inbox placement credits per month.
All plans include email alerts.
Trial includes deliverability monitoring for 30 days.
Placement tests cover six listed email services.

What to know first

Free tier has two placement credits monthly.
Assets above plan limits pause after a seven-day grace window.
Inbox Boost volume is capped by plan.
Some alert channels are still rolling out.

Valimail Monitor: what it does well

Identifies sending services and DMARC pass or fail status.
Shows aligned SPF and DKIM status.
Checks readiness for Google, Microsoft and Yahoo requirements.
Free plan includes five users and ten SPF lookups.
Logo upload supports BIMI previews.

What to know first

No API access on the free plan.
Does not manage DMARC policy or configure SPF and DKIM senders.
Setup requires changing the domain's DMARC rua parameter.

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