Provider Directory

Compare 100+ cold email infrastructure tools

Showing 32 of 32 providers

Cloudflare DNS

Featured
dns management
4.9

The fastest and most widely used DNS service in the world. Free for any domain, with sub-millisecond propagation, DNSSEC support, and the best uptime record in the industry.

0
IP Reputation
excellent
Key Features
Free anycast DNS
Near-instant propagation
DNSSEC support

Cloudflare Registrar

Featured
domain registrar
4.8

Cloudflare Registrar is a domain management service that allows users to register and transfer domains with zero markup pricing. It integrates directly with the broader Cloudflare security and performance ecosystem, ensuring simplified domain administration.

Starting At
$9
Key Features
At-cost domain pricing (no markup)
Free WHOIS privacy
Instant DNS propagation

ZeroBounce

Featured
verification service
4.8

ZeroBounce is a comprehensive email validation and deliverability platform that cleans email lists by removing invalid, disposable, and spam-trap addresses. It provides a suite of tools including an API for real-time verification and deliverability monitoring to ensure emails reach the primary inbox.

Deliverability
98%
Starting At
$16
IP Reputation
excellent
Key Features
98%+ verification accuracy
Spam trap detection
Abuse email detection

Instantly

Featured
sending platform
4.8

All-in-one cold email platform built for agencies and SDRs. Handles unlimited sending accounts, AI-powered personalization, and advanced deliverability features.

Deliverability
94%
Daily Limit
500
Starting At
$37
IP Reputation
excellent
Key Features
Unlimited sending accounts
AI email personalization
Inbox rotation

Google Workspace

Featured
inbox rotation
4.7

Google Workspace is a comprehensive cloud-based suite of productivity and collaboration tools that includes professional email hosting via Gmail for business. It serves as a foundational platform for cold email outreach due to its high deliverability reputation and robust integration ecosystem.

Deliverability
95%
Daily Limit
500
Starting At
$6
IP Reputation
excellent
Key Features
@gmail.com domain for custom domains
500 emails/day per account
2000 emails/day with warmup

Smartlead

Featured
sending platform
4.7

Cold email infrastructure platform with unlimited mailboxes, AI warmup, and master inbox. Designed for agencies running multiple client campaigns simultaneously.

Deliverability
93%
Daily Limit
600
Starting At
$39
IP Reputation
excellent
Key Features
Unlimited mailboxes
AI warmup network
Master inbox

MXToolbox

dns management
4.7

Free online tools for diagnosing email deliverability issues. Check DNS records, blacklists, MX records, and email headers to troubleshoot sending problems instantly.

0
Key Features
MX record lookup
Blacklist checker (100+ lists)
SPF record tester

Porkbun

domain registrar
4.7

Porkbun is a popular, budget-friendly domain registrar known for its transparent pricing, quirky branding, and intuitive management interface. It offers a wide range of domain extensions and includes essential features like free SSL certificates and email forwarding with every purchase.

Starting At
$9
Key Features
Transparent renewal pricing
Free WHOIS privacy
Free SSL certificate

Mailreach

Featured
warmup service
4.7

Mailreach is a dedicated email deliverability and warm-up service designed to improve sender reputation and prevent cold emails from landing in spam folders. It features an automated warm-up network that interacts with your emails to boost inbox placement rates.

Deliverability
95%
Starting At
$25
IP Reputation
excellent
Key Features
Peer-to-peer warmup network
Spam score monitoring
Inbox placement testing

Hunter.io

verification service
4.6

Hunter.io is a comprehensive email outreach platform that helps users find and verify professional email addresses associated with specific domains. It offers integrated tools for lead enrichment and cold email campaign management.

Deliverability
92%
Starting At
$49
IP Reputation
good
Key Features
Email finder by domain
Email verifier
Bulk email finding

GMass

sending platform
4.6

Gmail-native cold email tool that works directly inside your inbox. Turns Google Sheets into mass email campaigns with powerful personalization.

Deliverability
89%
Daily Limit
500
Starting At
$25
IP Reputation
good
Key Features
Gmail-native interface
Google Sheets merge
Automated follow-ups

GlockApps

verification service
4.6

Inbox placement testing and spam filter monitoring. Send test emails and see exactly where they land across 90+ email providers — Gmail, Outlook, Yahoo, and more.

0
Key Features
Inbox placement testing across 90+ providers
Spam filter analysis
Blacklist monitoring

NeverBounce

verification service
4.6

NeverBounce is a comprehensive email verification and list cleaning platform that helps businesses reduce bounce rates and maintain high sender reputation. It offers real-time API integrations and bulk verification services to ensure data accuracy before launching campaigns.

Deliverability
97%
Starting At
$8
IP Reputation
excellent
Key Features
Real-time verification API
Bulk list cleaning
250+ integrations

Instantly Domains

domain registrar
4.6

Instantly Domains provides an automated platform for purchasing, warming, and managing professional email domains specifically for cold outreach campaigns. It integrates directly with the broader Instantly.ai ecosystem to streamline domain setup and reputation management.

Starting At
$14
Key Features
One-click domain purchase inside Instantly
Auto SPF/DKIM/DMARC configuration
Bulk domain buying

Dmarcian

dns management
4.6

dmarcian is an email security platform that specializes in helping organizations implement and manage DMARC, SPF, and DKIM protocols to prevent domain spoofing and phishing. It provides deep visibility into email traffic and simplifies the complex process of achieving a 'reject' policy.

0
Key Features
DMARC record setup wizard
XML report parsing and visualization
SPF alignment monitoring

Allegrow

warmup service
4.6

Allegrow is an email deliverability platform that monitors domain health and utilizes automated engagement simulations to improve sender reputation and inbox placement. It helps sales teams ensure their outreach reaches the primary inbox rather than the spam folder.

Deliverability
96%
Starting At
$99
IP Reputation
excellent
Key Features
Enterprise warmup infrastructure
Sender reputation scoring
Blacklist monitoring and alerts

Lemlist

sending platform
4.6

Cold outreach platform with best-in-class personalization including personalized images, videos, and LinkedIn integration for multi-channel sequences.

Deliverability
91%
Daily Limit
400
Starting At
$59
IP Reputation
good
Key Features
Personalized image and video thumbnails
LinkedIn + email sequences
lemwarm email warmup

Apollo.io

Featured
sending platform
4.5

All-in-one sales intelligence and engagement platform with a 275M+ contact database, email sequencing, and built-in warmup for prospecting at scale.

Deliverability
88%
Daily Limit
400
Starting At
$59
IP Reputation
good
Key Features
275M+ contact database
Email sequences
Built-in email warmup

Reply.io

sending platform
4.5

AI-powered sales engagement platform with multi-channel sequences, Jason AI SDR agent, and deep CRM integrations for B2B sales teams.

Deliverability
90%
Daily Limit
400
Starting At
$60
IP Reputation
good
Key Features
AI SDR (Jason AI)
Email + LinkedIn + SMS sequences
Email warmup

Saleshandy

sending platform
4.5

Cold email outreach tool with unlimited email accounts, AI-powered sequence writing, and built-in B2B lead finder used by 10,000+ businesses.

Deliverability
91%
Daily Limit
500
Starting At
$25
IP Reputation
good
Key Features
Unlimited email accounts
AI sequence writer
Spintax support

Warmbox

warmup service
4.5

Warmbox is an AI-powered email warm-up service designed to improve email deliverability by simulating human interaction with your inbox. It automatically interacts with your messages to build sender reputation and prevent emails from landing in spam folders.

Deliverability
93%
Starting At
$15
IP Reputation
good
Key Features
35,000+ real inbox pool
Custom warmup strategies
Inbox placement tracking

Namecheap

Featured
domain registrar
4.5

Namecheap is a budget-friendly domain registrar and hosting provider that offers affordable email hosting services, including private email packages with anti-spam protection. It is a popular choice for individuals and small businesses looking for cost-effective infrastructure to manage domain-based email addresses.

Starting At
$7
Key Features
Bulk domain search and purchase
Free WhoisGuard privacy protection
Free DNS management

Microsoft 365 Business

inbox rotation
4.5

Microsoft 365 Business is a comprehensive suite of cloud-based productivity tools and enterprise-grade security features designed for small to medium-sized organizations. It integrates essential office applications with advanced email hosting, collaboration platforms like Teams, and robust identity management systems.

Deliverability
94%
Daily Limit
1,000
Starting At
$6
IP Reputation
excellent
Key Features
1000 emails/day per account
Exchange Online protection
SPF/DKIM auto-setup

Kickbox

verification service
4.5

Kickbox is an industry-leading email verification and deliverability suite designed to help businesses improve sender reputation by cleaning email lists. It provides real-time API integrations and comprehensive deliverability tools to ensure emails reach the inbox rather than spam folders.

Deliverability
96%
Starting At
$5
IP Reputation
excellent
Key Features
Sendex quality score (0-100)
Bulk and real-time verification
Disposable email detection

Maildoso

inbox rotation
4.5

Maildoso is an email infrastructure platform designed to help cold emailers set up, warm up, and scale their outreach campaigns with managed mailboxes. It focuses on providing a streamlined solution for managing multiple domains and ensuring high deliverability for high-volume sending.

Deliverability
91%
Daily Limit
300
Starting At
$3
IP Reputation
good
Key Features
Dedicated cold email mailboxes
Auto DNS setup
Built-in warmup

Woodpecker

sending platform
4.4

Cold email and sales automation tool focused on deliverability and compliance. Popular with European agencies for GDPR-friendly outreach workflows.

Deliverability
91%
Daily Limit
300
Starting At
$49
IP Reputation
good
Key Features
GDPR-compliant workflows
Inbox rotation
Condition-based follow-ups

Brevo (ex-Sendinblue)

sending platform
4.4

All-in-one marketing platform with transactional email, marketing automation, and CRM. Offers SMTP relay with strong deliverability for mixed marketing and cold outreach use cases.

Deliverability
90%
Daily Limit
300
0
IP Reputation
good
Key Features
SMTP relay
Marketing automation
CRM included

Lemwarm

warmup service
4.4

Lemwarm is an automated email warm-up and deliverability platform that maintains sender reputation by simulating human-like interactions across email accounts. It integrates seamlessly with lemlist to ensure cold outreach campaigns land in primary inboxes rather than spam folders.

Deliverability
91%
Starting At
$29
IP Reputation
good
Key Features
AI-powered warmup scheduling
Community warmup network
Deliverability score

Infraforge

inbox rotation
4.4

Infraforge is a specialized email infrastructure platform designed to automate the technical setup of cold outreach, focusing on multi-account management and deliverability optimization. It streamlines the creation and maintenance of high-volume email sending domains to ensure better inbox placement.

Deliverability
93%
Daily Limit
400
Starting At
$47
IP Reputation
good
Key Features
Dedicated private IP pools
Custom email domains
Inbox rotation

Mailshake

sending platform
4.4

Veteran cold email platform used by thousands of sales teams. Offers email sequences, phone dialing, and LinkedIn touchpoints in one unified workflow.

Deliverability
89%
Daily Limit
500
Starting At
$58
IP Reputation
good
Key Features
Email sequences
Phone dialer
LinkedIn steps

Outreach.io

sending platform
4.3

Enterprise-grade sales execution platform with AI insights, pipeline management, and comprehensive engagement tracking for large B2B sales orgs.

Deliverability
87%
Daily Limit
1,000
Starting At
$100
IP Reputation
good
Key Features
AI-powered deal insights
Pipeline management
Revenue intelligence

GoDaddy

domain registrar
3.9

GoDaddy is a comprehensive domain registrar and web hosting provider that offers integrated professional email services powered by Microsoft 365. It is designed to help small businesses manage their online presence, domain management, and business communication tools in one centralized dashboard.

Starting At
$1
Key Features
Domain search and purchase
Website builder bundling
Email hosting