Outboundry Blog
Blog
Playbooks, deliverability tips and product updates for modern outbound teams.
MX Records for Multi-Domain Cold Email: Setup and Common Mistakes
How MX records work across a fleet of sending domains, why replies get lost when they are wrong, and the setup mistakes that quietly cost you meetings.
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Cold Email Ramp Schedule: How Fast You Can Safely Increase Volume
A week-by-week schedule for ramping new domains and mailboxes, the metrics that tell you to slow down, and how to recover when you have pushed too hard.
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How Many Mailboxes Do You Need for Cold Email? (With the Actual Math)
Work out how many mailboxes and domains your sending volume requires, why the safe per-mailbox limit is lower than the technical one, and how much headroom to buy.
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Bulk DNS Updates for Cold Email: How to Manage 50+ Domains Safely
Managing SPF, DKIM and DMARC across dozens of sending domains by hand is where silent deliverability failures come from. Here is a safe process, and how to automate it away.
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SMTP Relay vs SMTP Server: Which One Cold Email Actually Needs
The difference between an SMTP relay and your own SMTP server, what each does to deliverability and control, and which one makes sense at your sending volume.
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SMTP Error Codes Explained: 550 5.7.1 and the Ones That Actually Matter
A practical guide to the SMTP errors cold email senders hit most, what each one is really telling you, and the fix for each, including 550 5.7.1, 5.7.26, 421 throttling and soft bounces.
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Google Bulk Sender Guidelines in 2026: What Changed and How to Comply
Google now rejects non-compliant bulk mail outright instead of filtering it. Here are the current SPF, DKIM, DMARC, spam-rate and one-click unsubscribe requirements, who they apply to, and how to check you pass.
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Monthly vs Annual Billing for Cold Email Tools: The Lock-In Trap
Annual plans advertise a discount. For outbound teams whose volume moves, they often cost more. Here is the actual math on commitment, and which parts of the stack you should never lock in.
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AI Reply Agents Compared (2026): Customization, Guardrails and Handoff
AI reply agents all demo well. This compares them on what actually matters in production: tone control, objection handling, escalation rules, and where the human takes over.
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ICP Scoring for Outbound: How to Stop Emailing Bad-Fit Leads
Bad-fit leads cost you more than a wasted send, they cost deliverability. Here is how ICP scoring works, which signals actually predict fit, and how to score leads before they enter a sequence.
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Google Workspace Cold Email Cost: The Real Math Per Mailbox
What Google Workspace mailboxes actually cost for cold email once you account for resellers, mailbox count, domains and DNS, and the volume at which per-seat pricing stops making sense.
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Dedicated IP for Cold Email: What It Costs and When It’s Worth It
A practical guide to dedicated IPs for cold outreach: what shared IPs actually cost you, the volume where a dedicated IP starts paying off, how to warm one, and what providers charge.
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Instantly vs Smartlead: Neither Solves Your Infrastructure Problem
A practical Instantly vs Smartlead comparison on campaign management, deliverability tooling, agency features and pricing, plus the part of the stack both leave you to buy separately.
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Maildoso vs Mailscale: Which Should You Actually Buy in 2026?
Maildoso and Mailscale both sell cold email inboxes at scale. Here is how they differ on mailbox type, ownership, DNS automation and price, and the question that matters more than either.
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Zapmail vs Infraforge: Which Cold Email Infrastructure Wins in 2026?
Zapmail and Infraforge take opposite approaches to cold email infrastructure. Here is how they compare on mailbox type, dedicated IPs, billing terms and cost at scale, and when neither is the right answer.
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6 Best Salesforge Alternatives for Multichannel Outbound (2026)
Comparing the best Salesforge alternatives for cold email and LinkedIn outreach, on AI personalization, reply automation, lead data, infrastructure and how many subscriptions each one really needs.
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6 Best Leadsforge Alternatives for Accuracy, Filters and Price (2026)
Comparing the best Leadsforge alternatives for B2B lead data on verified email accuracy, filter depth, lead types covered, credit pricing and whether outreach is included.
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Primeforge vs Mailboundry: Real Cost Per Mailbox, Compared
Primeforge sells Google and Microsoft mailboxes. Mailboundry sells dedicated-IP private infrastructure. Here is which model wins at your volume, and what each actually costs once the full stack is counted.
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5 Best Primeforge Alternatives: Google & M365 Mailboxes from $4/Month
Comparing the best Primeforge alternatives for Google Workspace and Microsoft 365 cold email mailboxes, on price per mailbox, setup speed, DNS automation and what else you have to buy.
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Infraforge Review 2026: Pricing, Lock-In, and What I’d Use Instead
An honest Infraforge review for cold email teams: what the private infrastructure does well, where the billing model and stacked subscriptions hurt, and when a different provider fits better.
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5 Best Infraforge Alternatives for 2026 (Cheaper, Monthly Billing)
Looking for an Infraforge alternative? Compare five private cold email infrastructure providers on dedicated IPs, DNS automation, billing flexibility and real cost per mailbox.
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Outboundry vs Instantly.ai vs Apollo.io: Best Outbound Tool for 2026
A feature-by-feature comparison of the three platforms on deliverability, automation, lead data and pricing, so you can choose the best outbound tool for your team.
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Email Deliverability: The Complete Guide
Why cold emails land in spam and how to fix it, the five areas that decide inbox placement, in order, with free tools to test each piece as you go.
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15 Cold Email Templates That Actually Get Replies
Proven cold email templates by scenario (openers, follow-ups, breakups and by persona) each with why it works and how to personalize it. Copy, tweak, send.
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The Complete Guide to Automated LinkedIn Outreach
How automated LinkedIn outreach actually works, what's safe to automate, and how to run campaigns that book meetings without getting your account flagged.
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How to Write LinkedIn Connection Requests That Get Accepted
Acceptance rate quietly governs your whole LinkedIn funnel. The targeting rules, note templates and timing that get connection requests accepted in 2026.
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Ideal Customer Profile (ICP): How to Build One
What an ideal customer profile is, why it’s the foundation of good outbound, and how to build one step by step with a fill-in-the-blanks ICP template.
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SPF, DKIM & DMARC Explained (and How to Set Them Up)
What SPF, DKIM and DMARC are, why inbox providers now require them, and how to set up each record correctly with free tools to check and generate yours.
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The Best LinkedIn Outreach Tools, Compared (2026)
A practical comparison of the best LinkedIn outreach tools, what each does well, who it's for, and how to choose the right automation platform for your team.
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Cold Email Subject Lines That Get Opens
Cold email subject lines that get opened by category, with why each works and the rules behind them, plus the words to avoid so you don't land in spam.
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Why Your Cold Emails Land in Spam, and How to Fix Deliverability
Your copy is rarely the problem, your deliverability is. Five reasons cold emails land in spam in 2026, and the exact setup that keeps them in the inbox.
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What Is a Sales Automation Tool? (And How to Choose One)
A clear explanation of what a sales automation tool does, which tasks it should and shouldn't handle, and how to choose the right one for your team.
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Email Warmup: What It Is and How to Do It Right
What email warmup is, why every cold-email mailbox needs it, how long it takes, and how to warm up inboxes the right way to stay out of spam.
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How to Write a Cold Email That Gets Replies
A step-by-step guide to writing cold emails that get replies, structure, each line's job, examples, personalization and the mistakes that kill response rates.
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LinkedIn Lead Generation: How to Automate Your Pipeline
How to generate leads on LinkedIn with automation, building a target list, running outreach that converts, and keeping your pipeline full without manual grind.
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Cold Email Follow-Up Sequences That Get Replies
How to build a cold email follow-up sequence that gets replies, how many to send, timing, what to say in each, and ready-to-use follow-up templates.
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How to Find Anyone’s Email Address (8 Methods)
Eight proven ways to find anyone's professional email address from email finder tools to manual methods, plus how to verify addresses so you don't bounce.
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LinkedIn Lead Generation: A Step-by-Step System for B2B Teams
A repeatable five-stage LinkedIn lead generation system, define, find, connect, nurture and convert, that beats volume and builds real B2B pipeline.
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Outbound Outreach: A Practical Playbook for 2026
A no-fluff outbound outreach playbook, how to build a list, write messages people answer, sequence your touches, and measure what actually drives meetings.
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12 LinkedIn Message Templates That Get Replies
LinkedIn message templates for every step (connection requests, first messages, follow-ups and by goal) each with why it works and how to personalize.
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Multichannel Outreach: The Complete Strategy Guide
How to combine LinkedIn and email into one outreach sequence that gets more replies, why multichannel works, how to build the cadence, and examples.
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What Is Prospecting? A Practical Guide to Sales Prospecting
What prospecting means in sales, why it matters, and the techniques and tools that turn cold lists into booked meetings, explained simply, with examples.
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LinkedIn + Email Sequence Examples (Copy These Cadences)
Ready-to-copy LinkedIn + email outreach sequences with exact timing and messaging for each step for sales, senior prospects and recruiting.
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How to Avoid Spam Filters: 12 Ways to Reach the Inbox
Why your emails hit spam and how to avoid it, authentication, warmup, list hygiene, copy and the spam-trigger words to cut, with a practical checklist.
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The Cold Email Sequence That Actually Books Meetings
Single emails rarely convert, sequences do. A proven four to six email cold outreach framework with timing, personalization and the deliverability under it.
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A LinkedIn Content Strategy That Actually Generates Sales
Build a LinkedIn content strategy that warms up prospects and drives pipeline, what to post, how often, and how to turn engagement into conversations.
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Gmail & Yahoo Sender Requirements (2026)
Gmail and Yahoo's sender requirements explained (authentication, easy unsubscribe and spam-rate limits) and exactly how to comply so you reach the inbox.
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How to Reduce Your Email Bounce Rate
What email bounce rate is, what's a good rate, hard vs soft bounces, and the practical steps to reduce bounces and protect your sender reputation.
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How Many Cold Emails Can You Send Per Day (Safely)?
How many cold emails you can safely send per day per mailbox, why limits matter, and how to scale volume with multiple mailboxes without hitting spam.
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The Best Dripify Alternatives for LinkedIn Outreach (2026)
Looking for a Dripify alternative? Compare the best LinkedIn outreach tools by safety, sequencing, multi-account support, and price to find your fit.
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B2B Prospecting: How to Build a Targeted Lead List
Every campaign lives or dies on its list. How to build a targeted, verified B2B prospecting list with account-based targeting, clean data and smart segmentation.
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7 Cold Email Examples That Got Replies (Annotated)
Real, annotated cold email examples that get replies, broken down so you can see why each works and adapt them to your own outreach.
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High-Ticket Sales: How to Close Big Deals with LinkedIn Outreach
What high-ticket sales really takes, building trust, targeting the right buyers, and using LinkedIn outreach to start conversations that lead to big deals.
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Cold Email Benchmarks 2026: Open, Reply & Conversion Rates
What good cold email metrics look like, typical open, reply and positive-reply rate ranges, what drives them, and how to benchmark your own campaigns.
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How to Build a B2B Lead List That Actually Converts
How to build a high-quality B2B lead list from scratch, define your ICP, source contacts, verify them, and avoid the bought-list trap that kills deliverability.
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How to Use LinkedIn for Sales: A Complete Guide
Learn how to use LinkedIn for sales, optimizing your profile, finding the right prospects, using Sales Navigator, and turning connections into pipeline.
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Email Warmup Explained: How Long It Takes and Why It Matters
What email warmup actually does, how long it takes, what a healthy ramp looks like, and how to tell when a mailbox is ready to start cold sending.
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Email Verification: Why It Matters and How to Do It
What email verification is, why it protects your deliverability, how it works, and how to verify emails before you send to keep bounces low.
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B2B Lead Generation: The Complete Guide
A complete guide to B2B lead generation, inbound vs outbound, defining your ICP, sourcing and qualifying leads, and the channels and tools that work in 2026.
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10 Sales Prospecting Techniques That Work in 2026
Proven sales prospecting techniques from building a targeted list to multichannel outreach and trigger-based timing to fill your pipeline with qualified leads.
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Free Tool
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The Best Lead Generation Tools for 2026 (by Category)
The best lead generation tools in 2026 by category (lead databases, email finders, outreach and deliverability) and how to choose the right stack.
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Multichannel Outreach: Combine LinkedIn and Email to Double Replies
One channel leaves pipeline on the table. How to run LinkedIn and email in one conditional sequence so each channel warms up the next and replies compound.
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Free Tool
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8 LinkedIn Cold Message Examples That Get Replies
Real LinkedIn cold message examples that get replies (connection notes, first messages and follow-ups) annotated so you can see why each works.
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LinkedIn Sales Navigator: A Practical Guide for 2026
How to use LinkedIn Sales Navigator for prospecting, search filters, lead lists, saved searches and alerts, and how to turn Navigator leads into outreach.
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LinkedIn Outreach Strategy & Cadence That Gets Replies
A complete LinkedIn outreach strategy, how to target, the connection-to-conversation cadence, what to send at each step, and how to stay within safe limits.
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Comparisons
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How to Build a Sales Cadence That Books Meetings
What a sales cadence is, how many touches and what channels to use, and how to build one step by step with a ready-to-copy multichannel cadence example.
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AI Personalization at Scale: Make 1,000 Cold Emails Feel 1-to-1
Token-swap personalization fools no one. How AI personalization references real prospect details at scale, so every cold email reads one to one.
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Comparisons
+ better alternatives
Outbound Sales: The Complete Guide
A complete guide to outbound sales, what it is, the process, building a list, multichannel outreach, the metrics, and the modern outbound stack.
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Best Outbound Sales Automation Software
What outbound sales is, how to build a pipeline from scratch, a cold email + LinkedIn playbook, and how to choose the best outbound sales automation software.
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Multichannel Outbound Strategy: The Complete Guide
Coordinate email + LinkedIn in one sequence, orchestrate multiple accounts, warm up deliverability, and personalize at scale.
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Outbound Sales Statistics for 2026
Key outbound sales findings on cold email, follow-ups, multichannel and prospecting, the directional patterns that should shape your outreach.
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Comparisons
+ better alternatives
AI for Cold Email: How to Use It Well
How to use AI for cold email the right way (personalization, research and drafting) and where AI helps vs hurts, so your outreach stays human and effective.
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How to Reduce Your Email Bounce Rate With Verification
A high bounce rate quietly destroys sender reputation. How email verification works, the threshold you cannot cross, and how to keep lists clean over time.
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How to Personalize Cold Emails at Scale
How to personalize cold emails at scale without spending hours per prospect, what to personalize, the levels of personalization, and how to automate it.
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The Best Time to Send Cold Emails
When to send cold emails for the best response, best days, times and time zones, why timing matters less than you think, and how to find your own best window.
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Comparisons
+ better alternatives
A/B Testing Cold Emails: What to Test and How
How to A/B test cold emails the right way, what to test, how to test one variable at a time, which metrics to trust, and how to act on the results.
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Safe LinkedIn Automation: Daily Limits That Protect Your Account
LinkedIn restricts inhuman patterns, not automation. The safe daily limits, ramp-up approach and human-like behavior that keep your account healthy in 2026.
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Break-Up & Re-Engagement Emails That Get Replies
How to write break-up and re-engagement emails that win back silent prospects, why they work, when to send them, and ready-to-use templates.
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Comparisons
+ better alternatives
Custom Tracking Domain & Cold Email Sending Setup
What a custom tracking domain is, why it protects your deliverability, and how to set up your cold email sending infrastructure the right way.
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Email Blacklists: How to Check & Get Removed
What email blacklists are, how to check if your domain or IP is listed, how to get removed, and how to avoid being blacklisted in the first place.
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Comparisons
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Should You Buy an Email List? (The Honest Answer)
Why buying email lists almost always backfires (the deliverability, legal and quality problems) and the better way to build a targeted, verified list.
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LinkedIn
Lead Generation for Startups: A Practical Playbook
How startups can generate leads on a tight budget, why outbound fits early-stage, how to find first customers, and a lean lead-gen playbook that scales.
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Lead Generation for Agencies
How agencies can generate leads for their own pipeline and their clients', including running outreach across many accounts without burning domains.
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Social Selling on LinkedIn: A Practical Guide
What social selling is, how to do it on LinkedIn, and how to combine a strong presence with outreach to warm up prospects and book more meetings.
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LinkedIn
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Appointment Setting: How to Book More Sales Meetings
What appointment setting is, the process and skills behind it, and how to book more qualified sales meetings through multichannel outreach.
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The SDR Playbook: The Sales Development Rep Role
What an SDR does, the modern sales development playbook, the metrics that matter, and the tools and workflow that make an SDR effective.
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Cold Calling vs Cold Email: Which Works Better?
Cold calling vs cold email compared, the pros, cons, costs and best use cases of each, and why the best outbound teams combine them rather than choose.
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How to Scale a Lead Generation Agency
How to scale a lead generation agency, productizing your service, running outreach across many clients, protecting deliverability, and keeping clients.
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LinkedIn
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Recruiting Outreach: Templates That Get Candidate Replies
Recruiting outreach templates for sourcing candidates, cold emails and LinkedIn messages that get replies, with why each works and how to personalize.
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Link Building Outreach: Email Templates & Strategy
How to run link building outreach that earns backlinks, finding prospects, the email templates that work, personalization, and scaling without spamming.
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