TrulyInbox Free Plan vs BobWork: Limits, Pools, Outlook

The TrulyInbox free plan gives 1 email account and 10 warm-up emails per day; BobWork Email Warm-up gives up to 20 mailboxes and ramps each mailbox from 3 to 30 emails per day. Choose wrong and you either hit the free cap early or miss Outlook support. This guide compares the limits, pool models, providers, and practical fit.

Which free tools are compared?

This is a head-to-head comparison of standalone warm-up tools with a free-forever plan. It is not a reputation ranking.

Among standalone warm-up tools, only TrulyInbox (1 account, 10 emails/day) and BobWork Email Warm-up (up to 20 mailboxes, 3–30 emails/day each) offer a free-forever plan; every other tool is a trial or paid.

Paid prices were read from vendor pricing pages on 3 October 2026 where a paid price was stated. Free-tier details were checked from vendor pages on 4 October 2026. Prices change, so check before you buy.

The source list also included Mailivery, Warmbox, Instantly, Smartlead, Lemwarm, MailReach, Warmy, InboxAlly, Folderly, Warmup Inbox, and Mails.ai. Their pages either listed no free warm-up plan, listed a trial, bundled warm-up, or did not state warm-up volume clearly.

For the wider market view, read the best free email warm-up tools comparison. This page stays narrow: TrulyInbox versus BobWork.

How do the free plans compare?

The table is sorted by free mailbox allowance. That is a factual sort, not a quality score.

The biggest difference is capacity. BobWork gives more free mailboxes. TrulyInbox gives Outlook support.

The second difference is the pool. BobWork runs a shared network by default and lets you switch an account to a private pool. TrulyInbox lists a peer network of real accounts.

The third difference is sending pace. TrulyInbox states 10 warm-up emails per day. BobWork starts lower, then ramps to 30 per day by default.

That slower start is deliberate. Sudden sending jumps can look unnatural, especially on new domains. If you are warming a new domain, use the day-by-day warm-up timeline before you start outreach.

What does the TrulyInbox free plan include?

TrulyInbox offers a free forever plan with 1 email account, 10 warm-up emails per day, basic deliverability tracking, and no card. Its cheapest paid plan is Starter at $22/month annually or $29 monthly.

TrulyInbox fits a single mailbox user who wants a free start and needs Outlook support. That Outlook point matters if your sending identity is Microsoft-based.

Its free-plan limit is capacity. One email account and 10 warm-up emails per day can work for a solo sender. It will not cover a team warming several inboxes at once.

TrulyInbox uses a peer network. Its pricing page lists 40,000+ real accounts, including Google 21k+, Microsoft 9k+, and Zoho 760+. If you only want mailboxes you control to see your warm-up traffic, this is not the right pool model.

The available pricing-page facts do not state a full provider list. They do state Outlook support. They also state Google, Microsoft, and Zoho accounts inside the network figures.

Choose TrulyInbox between these two if Outlook is non-negotiable. It is also the simpler free fit if you only have one mailbox and do not want to connect a second inbox.

What does BobWork include?

BobWork Email Warm-up is free forever with no credit card, no time limit, and up to 20 mailboxes per account. Each mailbox starts at 3 emails/day and ramps by 2 per day to 30/day by default.

BobWork fits users who want more free capacity. By default your mailboxes warm in the shared network; switch the account to Private pool and your account's mailboxes write only to each other.

The private-pool mode has one requirement: you need at least 2 mailboxes, because a private pool needs another inbox to send to and receive from.

BobWork supports Gmail and Google Workspace through Google sign-in with the gmail.modify scope. Google shows an unverified-app notice because BobWork has not completed the CASA audit. Gmail and Google Workspace can also connect by IMAP with an app password where that setup is available; Google documents app passwords in its account help documentation.

BobWork supports Zoho Mail through the Zoho Mail API with a Self Client code, including on the free plan. Zoho explains Self Client access in its OAuth Self Client documentation. Zoho can also connect over IMAP on Mail Lite and higher.

Other supported connections are Lark Mail, Yahoo Mail, iCloud Mail, Amazon SES, SendGrid, Mailgun, and any IMAP+SMTP mailbox. For SES, SendGrid, and Mailgun, the sending platform uses SMTP credentials, while the receiving inbox connects over IMAP.

BobWork does not support Outlook or Microsoft 365 yet. Microsoft requires OAuth for this use case. Microsoft documents the authorization code flow in its identity platform documentation.

The engine is designed to be auditable. Sends are spread between 09:00 and 18:00 in the mailbox's own time zone. Weekends run at 30%. A pair never writes to each other twice within 3 hours.

About 40% of received warm-up mail gets a reply. Threads end after 3 messages. Messages are plain text, with first-name greetings, no links, and no images.

If warm-up mail lands in Spam, BobWork moves only its own warm-up mail to Inbox, marks it read, labels it Warm-up, and archives it after 24 hours. Only mail carrying the engine's hidden header is touched, except Zoho API senders where a known subject is used. Real mail is never read, moved, or answered.

The free pool does this step automatically, which helps when you manage several inboxes. You can read the exact engine rules on the BobWork warm-up strategy page.

Which one fits your mailbox count?

Mailbox count is the fastest way to choose.

If you have one mailbox, both can start immediately on their free plans; BobWork only needs a second mailbox if you switch the account to a private pool.

If you have 2 to 20 mailboxes, BobWork gives more free capacity. You can connect the mailboxes under one account and let them warm each other.

If you have an Outlook or Microsoft 365 mailbox, TrulyInbox is the fit between these two. BobWork does not support Outlook yet. Do not force a non-supported provider through a fragile workaround.

If you have Gmail, Google Workspace, Zoho, Yahoo, iCloud, Lark, SES, SendGrid, Mailgun, or a generic IMAP+SMTP mailbox, BobWork is within its supported provider set. If you use Zoho, the Zoho warm-up setup guide covers both API and IMAP paths.

If you run cold outreach, warm-up is only one control. You still need SPF, DKIM, DMARC, low complaint rates, clean lists, and conservative daily sending. Google says senders should keep spam complaint rates under 0.1% and avoid ever reaching 0.3% or higher in its email sender guidelines.

For real outreach, BobWork's published practice is to keep warm-up at 10–15 per day during campaigns and keep real outreach at 30–50 per day per mailbox. Add mailboxes instead of pushing one inbox harder. Pause a mailbox for a few days if its warm-up spam rate goes above 5%.

These are operational limits, not inbox-placement guarantees. No warm-up tool can guarantee inbox placement. Mailbox providers decide delivery using many signals.

What should you check first?

Use this checklist before you connect either tool. It focuses on the limits that change the decision.

For SPF, DKIM, and DMARC, use the free SPF checker, DKIM checker, and DMARC checker. BobWork also checks SPF, DKIM, and DMARC daily for connected domains and shows the results per domain.

Do not skip authentication because the warm-up tool connects successfully. Connection proves the mailbox can send or receive. It does not prove the domain is ready for outbound campaigns.

You should also check whether your mailbox is already landing in Spam. If it is, fix that before increasing volume. The guide on why emails go to spam covers the main causes.

When is free not enough?

A free plan is enough when the cap matches your sending model. It is not enough when you need more accounts, a specific provider, or higher managed volume.

TrulyInbox's free plan is enough for a single mailbox starting at 10 warm-up emails per day. Its paid path starts at Starter for $22/month annually, or $29 monthly, with unlimited accounts and 200/day listed in the source facts.

BobWork's free plan is enough when you want more than one free mailbox or a private pool. The limit is 20 mailboxes per account. The default ramp tops out at 30/day per mailbox, with a mailbox cap editable up to 100.

The private-pool option changes what warm-up can and cannot simulate. It avoids sending your addresses to strangers, but the diversity of your warm-up traffic depends on the mailboxes you add.

Peers on a different domain or provider are picked twice as often in BobWork. That helps when your account contains mixed domains or providers. It cannot create provider diversity that is not present in your account.

Shared networks work differently. They can provide a larger outside pool, but your mailbox exchanges messages with other users' mailboxes. Some teams accept that. Others avoid it for privacy and control reasons.

If you are unsure which pool model fits, read private warm-up pools versus public networks. It explains the trade-off without treating either model as universally safer.

Which free plan should you choose?

Choose TrulyInbox if you have one mailbox, need Outlook, and accept a peer network. Its free forever plan states 1 email account, 10 warm-up emails per day, basic deliverability tracking, and no card.

Choose BobWork if you have 1 to 20 non-Outlook mailboxes. The free plan has no credit card, no time limit, and supports Gmail/Workspace, Zoho, Lark, Yahoo, iCloud, SES, SendGrid, Mailgun, and generic IMAP+SMTP.

If you choose BobWork, connect your mailboxes (at least 2 if you switch to a private pool), review the Google unverified-app notice before approving Gmail access, and let the ramp run for 14 days on an existing domain. For a new domain, plan on 3–4 weeks before serious outbound volume. Start with the free warm-up tool when those limits match your setup.

Frequently asked questions