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Bulk cold email service

Bulk cold email service for teams that send thousands a day

Send bulk cold emails from one account. Find leads, clean them, rotate mailboxes, vary every message and follow up automatically. Cold email is a core use case here, not a policy violation. Plans from $29/month for 25,000 emails.

Start with 25,000 emailsSee how it works
Cold email allowedMailbox rotation built inStats while it sends
Q4 outreach, rotationFrom follows each mailbox
Example
sales@acme-outbound.comPurchased · 38/hour
Up
hello@acme-outbound.comPurchased · 38/hour
Up
jordan@acme.ioWorkspace · 40/hour
Up
team@acme-mail.comSMTP · 60/hour
Up
Sending, spread across 4 connectionsPause anytime
The short answerLast reviewed October 2026

A bulk cold email service lets you send first-contact emails to many prospects while spreading volume across mailboxes and servers. BulkResponse does this from one account: you find or import leads, clean them, connect or buy mailboxes, vary each message with AI spin variations, send on a schedule, and follow up automatically. Cold email is allowed inside our sending policies. Plans start at $29 a month for 25,000 emails.

How to send bulk cold emails

Six steps from raw list to replies

Each step is a screen in the same account. No exports between vendors, no extra logins.

Find leads

Filter B2B contacts by title, industry, location and revenue. Pay per lead.

How it works

Clean the list

One credit per address. The list stays locked until the clean is done.

How it works

Connect mailboxes or SMTP

Gmail, Outlook, purchased mailboxes, your own SMTP or managed servers.

How it works

Write and vary

Templates, merge fields and one to five approved variations per message.

Target and schedule

Mail everyone or only last campaign's clickers. Send now or pick a time.

Follow up and track

Autoresponders, triggers and live stats while the job runs.

How it works
Cold email policy

Yes, cold email is allowed here

BulkResponse is built to send bulk mail. B2B outreach is a core use case, inside our sending policies. Single opt-in is a list setting, and the import wizard records where each list came from. That record is a trust point you can show anyone who asks.

  • Single opt-in or double opt-in, set per list
  • Add an unsubscribe link and your postal address to every message
  • Suppression lists stop repeat mail to people who opted out, bounced or complained

You stay responsible for the law that applies to you and your recipients, such as CAN-SPAM in the US.

Import wizard: list sourceExample
How was this list obtained?
Trade show badge scans
Capture URL
https://example.com/event
Moving from another platform?
Yes, from Mailchimp
Last contacted
September 2026
AI spin variation

Stop sending the same cold email 50,000 times

Identical messages are easy for mailbox providers to spot. BulkResponse generates one to five variations of your subject, HTML body and plain-text body. You approve the ones you like, and each recipient gets one of them.

  • Works on campaigns, autoresponders and inside the drag-and-drop designer
  • Nothing sends until you approve the version
  • Personalization tags like {first_name} and {company} stay in place
Browse every feature
AI spin variationExample
Subject line, 3 approved variations
AQuick question about {company}'s Q1 pipeline
B{first_name}, worth a 10 minute call?
CIdea for {company}'s outbound
SubjectHTML bodyPlain-text body1 to 5 versions
Mailbox math

How many cold emails can one mailbox send per day?

Fewer than most people think. That is why rotation matters. Here are the caps inside BulkResponse.

Caps as set in the BulkResponse app, October 2026.
Mailbox typeDefault per dayHard cap per dayHow you add it
Free Gmail96100Connect with Google OAuth
Google Workspace9601,000Connect with Google OAuth
Outlook (when enabled on your account)2001,000Connect with Microsoft OAuth
Purchased from BulkResponseUp to 2,0002,000$3 a month each, up to 100 per order
Your own mailbox (SMTP)Set by you3,000Host, port, login, test before save
Emails per day, per mailbox
Free Gmail (OAuth)100 hard cap
Google Workspace (OAuth)1,000 hard cap
Outlook (OAuth, when enabled)1,000 hard cap
Purchased BulkResponse mailbox2,000 per mailbox
Your own mailbox over SMTP3,000 hard cap
Targeting and control

Mail only last campaign's clickers. Pause a live send in one click.

Filter any send by who clicked a specific link, who opened, who did neither, by domain, date added or confirm status. Then watch it run: sent, opens, clicks and bounces update while the job is going.

  • Schedule now or for a date and time
  • Pause, resume or resend from the job queue
  • The job stops before it starts if your credits cannot cover it
Bulk cold email campaign statistics updating during a send
Follow-up

Follow-ups that run themselves

Autoresponders send on a delay. Triggers react to what people do. Together they cover the sequences most outbound teams run.

Example sequence
Day 0
They join the list
Day 3
Autoresponder sends
They click
Trigger fires
Hot list
Moved for the next send
Day 7
Second follow-up

Autoresponders

  • Send the moment someone joins, or after hours, days, weeks, months or years
  • Send to everyone or a slice: clicked or not, opened or not, confirm status
  • Same designer and spin variation as campaigns, with their own stats

Triggers

  • Fire on an open, a click, a join, an unsubscribe or a date you pick
  • Send an email, add the person to a list, or remove them
  • Track one campaign or all campaigns
Switching is easy

Move your list. Import it. Mail it.

Upload a file or paste addresses, map your fields, and watch the import report. Big files take a fast path. Then rebuild lists, custom fields, forms and campaigns in the same account.

  • Record how each list was obtained and when people were last contacted
  • Map custom fields: text, dropdown, checkbox, number, URL, date
  • New contacts can drop straight into an autoresponder
Migration checklist covers
MailchimpAWeberGetResponseiContactConstant Contact
CSV, TXT or pasted addresses. Header row, separator and quote character are all set in the wizard.
Pricing

What does a bulk cold email service cost?

Public prices, month to month. The price follows the number of emails you send.

Prices read from the live pricing page, October 2026.
Emails per monthPricePer 1,000Google mailboxes
25,000 emails$29/month$1.162Choose
50,000 emails$49/month$0.985Choose
100,000 emails Best Deal$89/month$0.8910Choose
200,000 emails$159/month$0.8020Choose
500,000 emails$299/month$0.6030Choose
See every plan up to 10 million

Add mailboxes at $3 a month each and managed servers at $20 a month each.

Customer reviews

Real reviews from real senders

Quoted word for word from Trustpilot and Capterra, with the reviewer and date. Click through and read every review, including the critical ones.

Trustpilot
“A GREAT alternative to Amazon SES without all the Bounce Rate Limits!”
FaustoUnited States · May 2026Read
Trustpilot
“Excellent Service over many years.”
ColinSpain · May 2024Read
Capterra
“Great experience, I have used other services but they did not guide me.”
Mubashir H.Professor and Dean · May 2024Read

Ratings read from each site in October 2026. Review counts are shown next to every score.

FAQ

Bulk cold email service FAQ

Is cold email legal?
Cold B2B email is legal in the US when you follow CAN-SPAM: honest headers and subject lines, a working opt-out and your postal address. Rules differ in other countries. BulkResponse allows cold email inside its sending policies, and you stay responsible for the law that applies to you and your recipients.
How many cold emails can I send per day?
It depends on how mail leaves your account. A free Gmail inbox is capped near 100 a day, Google Workspace at 1,000, a purchased BulkResponse mailbox at 2,000 and a managed SMTP server at 5,000. One campaign can rotate across many of them, so daily volume grows with every connection you add.
Can I use my own domain and mailboxes?
Yes. Add your sending domain, publish the SPF record and we help you publish DKIM. Connect Gmail or Outlook with OAuth, add any mailbox over SMTP, or buy mailboxes from us at $3 a month each.
Is there a free trial?
No. There is no free tier and no free test account. The smallest plan is $29 a month for 25,000 emails, month to month, and you can request cancellation before your next bill date.
Does BulkResponse write my cold emails?
No. AI spin variation creates one to five versions of the subject and body you wrote, and you approve every version. It does not write a campaign from scratch.
What happens to bounces?
Hard bounces are marked on the subscriber and skipped on later sends. Soft bounces and delays are classified separately so a temporary problem is not treated as a dead address. You can connect up to 10 bounce mailboxes.
Can I see results while a campaign is still sending?
Yes. Sent, opens, clicks, bounces and the country map update while the job is running, and you can pause it at any time.
Is there an API?
The public API covers lists and list categories: read, create and update. It does not send campaigns or import subscribers.
See all questions
Keep exploring

Where to go next

Lead Finder

Build the prospect list inside your account and pay per lead.

Explore Lead Finder

Email list cleaning

Clean the file before the first send. One credit per address.

See list cleaning

Mailboxes and SMTP

Add sending capacity with mailboxes, SMTP or managed servers.

See mailbox options

Launch your first cold campaign this week

Start with 25,000 emails for $29 a month. Connect your domain, add mailboxes and send. Month to month, cancel by request.

Start with 25,000 emailsTalk to sales