Folderly Alternative: Free Warm-Up vs $96/Mailbox

If you want a Folderly alternative mainly for warm-up cost, the number is simple: Folderly warm-up is listed at $96 per mailbox per month, while BobWork Email Warm-up is free for up to 10 mailboxes. Ignore that gap and a 20-mailbox setup can cost $1,920 per month before campaigns start. This guide compares price, limits, trade-offs and switching steps.

Use this as a buying check, not a takedown. Folderly may still fit if you want a paid deliverability workflow around alerts and tests. If you only need warm-up for supported mailboxes, the free email warm-up tool covers up to 10 mailboxes with a stated ramp, daily DNS checks and a shared warm-up network by default.

Prices were read from vendor pricing pages in October 2026. Check current pricing before you buy.

Is BobWork a Folderly alternative?

Yes, if the job is email warm-up for Gmail, Google Workspace, Zoho Mail, Lark Mail, Yahoo Mail, iCloud Mail, Amazon SES, SendGrid, Mailgun, or any mailbox that works through IMAP and SMTP.

No, if you need Microsoft 365 or Outlook today. BobWork Email Warm-up does not support Outlook yet. Microsoft requires OAuth, and that support is not live.

Folderly is different from many warm-up-only tools. In our captured pricing facts, its free item is alerts plus 2 tests per month. Warm-up itself is not free and is priced per mailbox. That makes it closer to a deliverability product than a simple warm-up-only tool.

That can be useful. Some teams want paid deliverability testing and monitoring in one workflow. Others only need mailboxes to exchange safe, plain-text messages while they watch spam placement and authentication.

If you are still choosing the category, start with the broader guide to free email warm-up tools in 2026. If your main concern is cost per mailbox, compare the wider cheapest email warm-up table.

How do Folderly and BobWork compare?

This table uses captured pricing-page facts for Folderly and published product facts for BobWork Email Warm-up.

The main difference is price from the first mailbox. Folderly warm-up is paid per mailbox. BobWork warm-up stays free until you pass 10 active mailboxes.

The second difference is stated behaviour. BobWork publishes the ramp: 3 emails per day at the start, plus 2 per day, capped at 30 per day unless you edit the cap. Weekends run at 30%. Sends spread across 09:00 to 18:00 in the mailbox's own time zone.

Folderly's daily warm-up volume was not stated on the pricing page in our captured facts. That does not mean there is no limit. It means you should check the current page or ask their team before you buy.

For deliverability basics, neither tool replaces proper authentication. Google publishes email sender guidelines, and Yahoo publishes sender requirements and best practices. Those rules still matter when warm-up activity looks healthy.

What does each tool cost?

This table uses Folderly's listed warm-up price of $96 per mailbox per month and BobWork's free tier up to 10 mailboxes. It does not include taxes, currency conversion, discounts, bundles or features not stated in the captured pricing facts.

For one mailbox, Folderly warm-up costs $96 per month after the trial. BobWork costs $0 for that mailbox.

For a 5-mailbox sales setup, Folderly warm-up reaches $480 per month. That is where per-mailbox pricing starts to matter. Many cold email teams add mailboxes instead of raising volume on one inbox.

For 20 mailboxes, the gap is $1,890 per month: Folderly is $1,920 and BobWork is $30 (10 free plus 10 extra at $3). That is why outbound teams should compare warm-up tools by total mailbox count, not only the lowest advertised price.

Above 10 mailboxes, BobWork charges $5 per active mailbox per month ($3 each from 10 extra, $2 each from 50 extra). So 25 active mailboxes means 10 free and 15 paid. The paid extras are billed by Stripe, prorated, cancellable any time, and extras pause without billing.

Price should not be the only test. A tool that supports your exact provider, volume policy and reporting needs can be worth paying for. But if the requirement is simple warm-up for supported providers, the cost difference is material.

When should you stay with Folderly?

Stay with Folderly if you use more than warm-up. If alerts and testing are part of your internal deliverability process, do not replace that workflow unless you have another way to cover those checks.

Stay if you need continuity. Deliverability work rewards stable sending patterns. If your mailboxes are healthy, authentication passes, and campaigns perform within expected ranges, plan a careful transition instead of a sudden switch.

Stay if your current provider coverage depends on Folderly. Folderly's providers were not stated on the pricing page in our captured facts, so verify current support directly. BobWork supports many IMAP and SMTP mailboxes, but not Outlook yet.

Stay if your team needs a paid procurement record for the whole deliverability process. Some companies prefer invoice-backed vendor relationships for operational systems. Free warm-up can still help with tests, but internal policy may decide the tool.

Stay if you expect the vendor to diagnose issues outside warm-up. Warm-up does not fix bad lists, misleading subject lines, broken SPF alignment, high complaint rates or poor segmentation. Google says spam complaint rates should stay under 0.1% and never reach 0.3% or higher.

If you are comparing more paid options, use the wider best email warm-up tools comparison. For the shared-network model itself, read how email warm-up networks work.

When does BobWork fit better?

BobWork fits when you need warm-up across many mailboxes without paying per inbox. Up to 10 mailboxes are free per account. Each active mailbox above 10 is $5 per month ($3 each from 10 extra, $2 each from 50 extra).

The default pool is a shared warm-up network. Every active mailbox on the service exchanges warm-up mail with other active mailboxes across accounts. If you prefer separation, switch to a private pool in the dashboard under Mailbox pool → Pool mode. A private pool needs at least 2 mailboxes.

One mailbox is enough to start in the shared network. Two or more mailboxes on different domains or providers can still warm faster because the engine picks peers on different domains or providers twice as often.

The content is controlled by the engine. It uses plain office notes: 40 openers, 16 replies and 6 closers. Messages are plain text with no links and no images. About 40% of received warm-up mail gets a reply, and threads end after 3 messages.

The free pool does spam rescue automatically for warm-up mail. If a warm-up message lands in Spam, the receiving mailbox moves it 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. Real mail is never read, moved or answered.

BobWork also gives you a readiness gate. A mailbox is ready for outbound when it has warmed for 14 or more days, has a 7-day spam rate of 3% or lower, and has received at least 30 warm-up emails. For a new domain, use 3 to 4 weeks.

If your issue is Gmail placement rather than price, read the troubleshooting guide for Gmail emails going to spam. If you are warming a fresh domain, use the new-domain warm-up plan.

How do you switch safely?

Do not connect every mailbox and start campaigns on the same day. Treat the move like any other deliverability change. One change at a time makes the data easier to read.

Check authentication first

Before moving warm-up, check SPF, DKIM and DMARC. BobWork checks those daily per domain, but you should still understand the records.

Use SPF to authorise sending sources. Use DKIM to sign mail from the sending domain. Use DMARC to tell receivers how to handle mail that fails authentication and alignment. The DMARC mechanism is defined in RFC 7489.

If you want a practical walkthrough, use the guide to SPF, DKIM and DMARC for cold email.

Pause the old warm-up

Pause Folderly warm-up on the mailbox before you start another warm-up engine. Two tools moving test messages, replying to threads and measuring inbox placement can create confusing data.

You do not need to delete anything immediately. Pause first, confirm the mailbox is stable, then decide whether to cancel.

Connect the mailbox

For Gmail and Google Workspace, sign in with Google or use IMAP with an app password. Google sign-in uses the gmail.modify scope. Google shows an unverified-app notice because BobWork has not completed the CASA audit.

For Zoho Mail, use the Zoho Mail API with a Self Client code. This works on the Zoho free plan. IMAP is also available on Mail Lite and above.

For Lark Mail, Yahoo Mail and iCloud Mail, use IMAP with the provider's app password or mail-client password flow.

For Amazon SES, SendGrid and Mailgun, use the platform's SMTP credentials for sending plus the receiving inbox over IMAP. That receiving mailbox is needed because warm-up depends on actual inbox placement, not only sent-message logs.

Choose the pool mode

Leave the default shared network on if you want one mailbox to start immediately. In that mode, your mailbox warms with other active mailboxes across accounts.

Choose a private pool if you only want your own account's mailboxes to write to each other. Go to Mailbox pool → Pool mode in the dashboard. You need at least 2 mailboxes for private mode.

Set the cap

Start with the default ramp unless you have a reason to change it. The engine starts at 3 emails per day, adds 2 per day, and caps at 30 per day. You can edit the cap per mailbox up to 100.

During real campaigns, keep warm-up around 10 to 15 per day. For real outreach, use 30 to 50 emails per day per mailbox as a typical safe range. Add mailboxes rather than forcing one mailbox to carry too much volume.

Watch the first 14 days

Let the mailbox warm for at least 14 days on an existing domain. Use 3 to 4 weeks for a new domain.

Watch the 7-day spam rate. In BobWork, spam rate means the share of a sender's warm-up mail that receiving mailboxes found in Spam over 7 days. Pause a mailbox for a few days if it rises above 5%.

Do not judge by one message. Look for a pattern across at least a week of warm-up activity.

What should you verify today?

Use this checklist before you move a mailbox. It keeps the decision grounded in verifiable items rather than feature-page language.

If Folderly's wider deliverability workflow is why you bought it, keep it until you have a replacement for those checks. If you only need warm-up for supported providers, connect one mailbox to BobWork Email Warm-up, leave the default shared network on, and compare your 7-day spam rate after two weeks.

What do buyers ask?

Is Folderly warm-up free?

No. In our captured pricing facts, Folderly warm-up is not free. The free item is alerts plus 2 tests per month. Warm-up is listed at $96 per mailbox per month, with a 7-day trial for 1 inbox.

Does Folderly support Outlook?

Outlook support was not stated on Folderly's pricing page in our captured facts. BobWork Email Warm-up does not support Outlook or Microsoft 365 yet because Microsoft requires OAuth.

How much does BobWork cost for 20 mailboxes?

BobWork Email Warm-up is free for up to 10 mailboxes per account, with no credit card and no time limit. Each active mailbox above 10 costs $5 per month ($3 each from 10 extra, $2 each from 50 extra), billed by Stripe and prorated. At 20 mailboxes that is 10 free plus 10 extra at $3, or $30 a month.

Can I run Folderly and BobWork together?

You usually should not run two warm-up tools on the same mailbox. It can make results hard to read. Pause one tool before starting the other, then watch spam rate, authentication and replies for at least 14 days.

Does warm-up guarantee inbox placement?

No. Warm-up can create positive mailbox activity and reveal spam placement, but it cannot guarantee inbox placement. Authentication, complaints, content, list quality and sending volume still decide whether real campaigns land well.

How long should I warm before outreach?

Use about 14 days for an existing-domain mailbox and 3 to 4 weeks for a new domain. BobWork marks a mailbox ready after 14+ days warming, a 7-day spam rate of 3% or lower, and at least 30 warm-up emails received.

Frequently asked questions