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Describe what you sell, pick the recipient, purpose and tone, and get a subject line plus a short B2B email in seconds.
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AI-optimized subject lines designed for maximum opens.
Draft personalized outreach emails in seconds, not hours.
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Describe your product and watch your personalized cold email appear here.
A first draft, not a send button. Add one detail you checked about the recipient, then send it from your own tool with a follow-up plan.
What MediaFast does
The free generator drafts a cold email you have to send blind. MediaFast finds the subreddit threads where your buyers already ask about this problem and drafts rule-aware replies for you.
How it works
Three steps take seconds. The last one is yours, and it matters most.
Step 01One or two sentences: who it helps and the result it gets them.
Up to 3,000 chars
Step 027 recipient roles, 4 purposes, 4 tones and 10 industries.
4 dropdowns
Step 03Subject under 50 characters, body under 150 words, one easy ask.
Seconds
Step 04Add one detail you checked about the recipient, then load it into your sender.
Your callYes. You can choose from four tone options (Professional, Casual, Persuasive, Friendly), select the recipient's role, pick the email purpose, and add extras like a P.S. line or social proof mention. The AI adapts the entire email structure, vocabulary, and call-to-action style based on your selections to match what works for your audience.
It is built for founders, sales reps, and agencies who want to skip the blank-page paralysis. Unlike a generic ChatGPT prompt, it asks targeted questions about your product, recipient role, purpose, tone, and industry, then follows fixed rules: a subject line under 50 characters, a body under 150 words, and one clear, low-friction call to action. It does not scan your copy for spam-trigger words, so give the subject line a quick read before you send.
Yes. The B2B cold email generator is the most common use case. Specify your ideal customer profile (industry, company size, role), the pain point you solve, and one piece of social proof (a recognizable customer, a specific metric, or a case study result). The AI will produce a B2B-ready cold email with a personalized hook, a 2-sentence value prop, and a low-friction CTA. Then run it through your CRM or outreach tool to send at scale.
2026 benchmarks, checked October 15, 2026
Four named reports, four methods. Reply rate, not open rate, is the number to watch.
| Metric | Benchmark | Source |
|---|---|---|
| Average reply rate | 3.43%, top quartile 5.5%+, top 10% 10.7%+ | Instantly 2026 (data Jan 1 to Dec 18, 2025) |
| Healthy reply rate | 3% to 5%, average 4.5% | Saleshandy, 30,314,409 emails, Jul to Oct 2026 |
| Reply rate on all sends | 0.45% (34,393 replies on 7,530,489 emails) | Belkins, 2025 campaigns |
| Best day | Wednesday (Instantly), Tuesday 9 to 10 AM (Saleshandy), Wed/Thu 0.48% (Belkins) | Three reports, three answers, all midweek |
| Best hours | 8 AM to noon, 0.54% (Belkins) | Recipient's time zone |
| Email length | Under 80 words for elite senders, under 100 for the first touch | Instantly 2026, Saleshandy 2026 |
| Subject line | 5 to 7 words, 36 to 50 characters | Saleshandy 2026 |
| Bounce rate by list quality | Valid 1.21%, unverified 2.11%, risky 2.22%, bad 10.58% | Saleshandy 2026 |
| List size | Under 50 contacts 5.8% replies, 500 to 1,000+ contacts 2.1% | Woodpecker |
| Open rate | 27.7% to 44% average, 40% to 60% good, 65%+ elite | Woodpecker |
| Apple Mail Privacy Protection | About 49% of opens, so open rates run high | Woodpecker |
Sources: Instantly 2026 benchmark, Saleshandy cold email statistics (updated Oct 7, 2026; its earlier January to June 2026 edition of 53.1 million emails put follow-ups at 44% of positive replies), Belkins response rate study (updated Jun 26, 2026) and Woodpecker cold email statistics (updated Jun 23, 2026, 20M+ emails from 1,000+ customers in 52 countries). Checked October 15, 2026.
The takeaway across all four reports is the same: reply rate, not open rate, is the number that matters, and much of that reply rate comes from follow-ups rather than the first send. This cold email generator drafts the first email. Pair it with a follow-up sequence in your sending tool for the full picture.
A good open rate for cold emails is between 40% and 60%, and anything above 60% is excellent (Woodpecker counts 65%+ as elite). Open rates depend heavily on your subject line, sender name, and send time. If your open rate is below 30%, your subject lines likely need work or your emails are landing in spam. Test different subject line formats, keep them under 50 characters, and avoid spam trigger words like ‘free,’ ‘guarantee,’ or excessive capitalization.
One caveat for 2026: Apple Mail Privacy Protection preloads images, which Woodpecker says accounts for about 49% of opens. Treat open rate as a rough spam check and judge campaigns by replies.
Despite the rise of social selling and inbound marketing, cold email remains one of the highest-ROI channels for B2B outreach. Here is why smart founders still rely on it.
High ROI, with a caveat. Litmus puts email marketing ROI at about $36 for every $1 spent, but that figure covers email to people who opted in, not cold email. Cold email's real edge is targeting: you pick the exact decision-makers at companies that match your ideal customer profile. Unlike paid ads where you pay per impression, it costs almost nothing to send and one reply can turn into a deal worth thousands.
Direct access to decision-makers. Cold email is the only channel where a solo founder can land directly in a CEO's inbox. No algorithms filtering your content, no gatekeepers blocking your call. A well-crafted email gets the same real estate in someone's inbox whether you are a Fortune 500 company or a bootstrapped startup with zero brand recognition.
Scalable and predictable. Once you find a formula that works (the right subject line, value proposition and CTA), results scale with volume. At Instantly's 3.43% average reply rate, 500 emails bring about 17 replies, and some of those turn into meetings. That kind of predictability is rare in marketing. Combine cold email with organic channels like Reddit for even stronger results.
Teardown
Four lines work, one fails. Use it as a checklist before you send whatever the generator writes.
Hi [Name], noticed [Company] just posted 3 open SDR roles.
2I wanted to reach out because I think our platform could be a great fit for your team's needs.
3We helped a similar 40-person sales team cut ramp time from 6 weeks to 3.
4Worth a 15-minute call this week?
5[Your name]
Specific to the recipient's company, under 50 characters, phrased as a genuine question rather than a pitch. Saleshandy's 2026 data puts the best-performing subject lines at 5 to 7 words and 36 to 50 characters, and this one is 43.
References a real, verifiable signal about the recipient's company instead of a generic compliment. Proves the sender did five minutes of research.
Starts with 'I,' talks about the sender's platform instead of the recipient's problem, and says nothing specific. This is the line most cold emails get wrong.
One sentence of concrete social proof with a specific number and a comparable company size. This is the social proof checkbox in the generator above.
One low-friction, binary ask. Time-boxed, easy to say yes or no to. No second or third CTA competing for attention.
Notice the only weak line is the one that talks about the sender instead of the recipient. That single swap, from “I think our platform could help” to a specific, researched observation, is the difference between a 0.45% reply rate and the 5%+ range top-quartile senders report. The generator builds the recipient-focused version by default when you fill in a specific product description instead of a generic one.
Alex Berman, a cold email agency founder, breaks down three subject line and opener formulas (PC, PEC, and PPC) he used to scale outbound agencies. Useful context before you fill out the generator above.
“How To Write Killer Cold Emails That GUARANTEE Responses” by Alex Berman on YouTube.
Subject lines
Specific beats clever. The good ones name the company or a fact; the weak ones could go to anyone.
| Formula | Example | Use it for |
|---|---|---|
| Question about their company | Quick question about [Company]'s onboarding | Intro emails |
| Trigger event | Noticed [Company] is hiring 3 SDRs | Hiring, funding, launches |
| Idea for them | Idea for cutting [Company]'s ramp time | Partnerships, demos |
| Mutual connection | [Mutual name] suggested I reach out | Only when it is true |
| Specific result | How [Peer company] cut churn 23% | Social proof |
| Same-thread follow-up | Re: Quick question about [Company]'s onboarding | Step 2, sent as a reply |
Keep all caps, exclamation marks and words like “free,” “guarantee” or “opportunity” out of the subject. Only use “Re:” when you are replying in the same thread, never to fake a conversation. Data: Saleshandy 2026, checked October 15, 2026.
Copy, then personalize
Introduction, follow-up, demo request and partnership. Each one stays under 80 words.
Hi [Name], saw [Company] just shipped [feature]. New users often stall in week one after a launch like that.
[Product] fixes the drop-off with in-app guides your team builds in an afternoon. [Customer] lifted week-one activation by [X]%.
Worth a 15-minute look next week?
Hi [Name], floating this back up in case it got buried.
One idea you can use either way: [one specific tip tied to their problem].
Happy to send the 2-minute version if a call is too much. Should I?
Hi [Name], you're hiring 3 SDRs, so ramp time is probably on your radar.
We helped a 40-person sales team cut ramp from 6 weeks to 3 with [Product].
I can show you the exact setup in 15 minutes. Does Tuesday or Wednesday work?
Hi [Name], your audience of [who] keeps asking about [topic], and that's exactly what we cover.
Idea: a joint [webinar, guide or integration] where you bring [their strength] and we bring [ours]. We'd handle the setup.
Open to a quick chat to see if it fits?
Templates are a starting point. The B2B cold email generator above is the faster route: specify your ideal customer profile (industry, company size, role), the pain point you solve, and one piece of social proof (a recognizable customer, a specific metric, or a case study result). The AI produces a B2B-ready cold email with a personalized hook, a 2-sentence value prop, and a low-friction CTA. Then run it through your CRM or outreach tool to send at scale.
Whichever route you take, replace every bracket with something true and specific. The [X]% lift, the 40-person team and the 6-to-3-week ramp in these templates are placeholders, so swap in your own results.
Follow-up
Woodpecker saw replies roughly double with 3 to 5 follow-ups. Here is a spacing that fits Instantly's 4 to 7 touch range.
48%of sales reps never send a follow-upWoodpecker
+65.8%more replies from adding one follow-upWoodpeckerInstantly found 58% of replies arrive on the first email and 42% on follow-ups, and a reply-style step 2 sent in the same thread gave about a 30% lift. Saleshandy counted positive replies only and found 57% came from follow-ups, with the first follow-up alone driving 26%. Either way, one email and silence leaves a big share of your replies on the table. Each follow-up should add something new: a case study, a resource, or a different angle. Never send “just following up” with nothing attached. Checked October 15, 2026.
Deliverability, checked October 15, 2026
Four gates stand between your draft and the inbox. Miss one and the best copy never gets read.
Since Feb 1, 20245,000+ a day: SPF, DKIM, DMARC, one-click unsubscribe.
Rejections since Nov 2025
Same 2024 rolloutBulk senders: SPF, DKIM, DMARC, unsubscribe honored in 2 days.
Spam rate under 0.3%
Since May 5, 20255,000+ a day: SPF, DKIM and DMARC, or junk then 550 5.7.515.
Consumer inboxes only| Rule | Gmail | Yahoo | Outlook.com |
|---|---|---|---|
| Who counts as bulk | 5,000+ messages a day to Gmail accounts | Bulk senders (no public number) | 5,000+ messages a day to Outlook.com |
| Authentication, all senders | SPF or DKIM, valid PTR record, TLS | SPF or DKIM | Best practice |
| Authentication, bulk | SPF and DKIM, DMARC (p=none is fine), From domain aligned | SPF and DKIM, DMARC at least p=none, aligned | SPF, DKIM and DMARC at least p=none, aligned |
| Spam complaint rate | Under 0.3%, aim for under 0.10% | Under 0.3% | Not published |
| Unsubscribe | One-click for marketing mail, honored within 48 hours | One-click plus a visible link, honored within 2 days | Working unsubscribe link |
| What happens if you miss it | Ramping enforcement since Nov 2025: 4.7.x temporary and 5.7.x permanent rejections | Filtering to spam or blocking | Junk folder, then rejection with 550; 5.7.515 Access denied |
Sources: Google email sender guidelines and FAQ, Yahoo sender best practices, Microsoft Outlook.com sender policies. The Outlook.com rule covers consumer inboxes (Outlook.com, Hotmail, Live), not business Microsoft 365. Checked October 15, 2026.
Most founders sending cold email are nowhere near 5,000 a day, so the strict bulk sender list does not apply to them on paper. Gmail's rules for all senders still do: SPF or DKIM, a valid PTR record, TLS and a spam complaint rate under 0.3%. Set up DMARC anyway. It takes ten minutes, and mailbox providers judge the whole domain, so a sloppy setup hurts every email you send.
Common mistakes
Most cold emails fail because of the email, not the product. Each mistake has a one-line fix.
Mistake 01Mistake 02
Mistake 03
Mistake 04Mistake 05
Mistake 06Channel comparison
Each channel has a job. Here is how cold email stacks up so you can pick the right mix.
| Channel | Response rate | Cost to scale | Personalization | Deliverability risk | Best for | Follow-up | Automation |
|---|---|---|---|---|---|---|---|
| Cold email | 3-8% | Low ($30-50/mo tools) | High (full email body) | Medium (spam filters, sender rules) | B2B sales, partnerships | Excellent (sequences) | Very (many tools exist) |
| Cold DM (Twitter/X) | 1-5% | Free but time-heavy | Low (character limits) | Low (no spam filter) | Influencers, creators | Limited (feels pushy) | Risky (account bans) |
| LinkedIn outreach | 5-15% | High ($80-100/mo Premium) | Medium (connection note) | Low (platform delivers) | Enterprise, recruiting | Good (InMail chains) | Moderate (limits apply) |
| Reddit threadsPairs with email | Not comparable: public replies, not DMs | Free (organic) | High (you answer a real question) | Removal if you break subreddit rules | Buyers already asking about the problem | The thread stays up and keeps getting found | Risky (spam bans), post yourself |
Swipe to compare all 4 channels
Pro tip: combine channels. Send the cold email, then follow up with a LinkedIn connection request 2 days later. To add inbound next to outbound, tools like MediaFast help you show up on Reddit where your target audience already discusses the problems you solve.
Cold email is a numbers game. You send 500 emails, maybe 10 people reply, and 1 converts. Reddit lets you reach your ideal customers where they already hang out: 130.3 million daily active uniques and 514.6 million weekly active uniques in Q2 2026. Cold emails stop working when you stop sending, while a helpful Reddit post or reply can keep bringing visitors for months.
| Metric | Cold email | Reddit marketing |
|---|---|---|
| Trust level | Low (a stranger in the inbox) | High (a community answer) |
| Scalability | Linear (more sends, more cost) | Compounding (posts keep working) |
| Time to results | Immediate but short-lived | 1 to 2 weeks, then it snowballs |
Comparing the two in more depth? Read alternatives to cold email for SaaS founders and cold email vs content vs ads.
The live demo reads your website and builds a sample Reddit roadmap: subreddits picked from 4,200+, rule-aware drafts and a daily plan you post yourself.
Free live demo with your own website, no signup.
Founders who found buyers
Real posts from founders using MediaFast to find customers on Reddit.
Straight answers on writing, timing and delivering cold emails that get replies.
Yes, the Cold Email Generator is 100% free to use with no signup required. You can generate as many cold emails as you need by specifying your product, target audience, tone, and purpose (within a fair-use limit of 5 generations per minute). For founders looking to go beyond cold emails, tools like MediaFast can help you reach potential customers organically through Reddit marketing.
A good cold email is short (under 150 words, and 2026 data from Instantly says top senders stay under 80), personalized to the recipient, leads with value rather than a pitch, and has a clear, low-friction call to action. The subject line should be under 50 characters and spark curiosity without being clickbait. Avoid generic openers like 'I hope this email finds you well' and instead reference something specific about the recipient's company, a recent achievement, or a pain point relevant to their role.
Between 3% and 5% is healthy. Instantly's 2026 benchmark puts the average at 3.43%, the top quartile at 5.5%+ and the top 10% of senders at 10.7%+. Saleshandy measured a 4.5% average across 30.3 million emails sent July to October 2026. Belkins reports 0.45%, but it divides replies by every email sent across 7.5 million agency emails, so its number reads lower. Track replies, not opens: Apple Mail Privacy Protection inflates open rates.
3 to 5 follow-ups is the sweet spot. Woodpecker measured an 8.3% reply rate for campaigns with 3 to 5 follow-ups versus 4.1% with none, and Saleshandy found 57% of positive replies come from follow-ups, with the first follow-up alone driving 26%. Space them 3 to 5 days apart, and each follow-up should add new value or a different angle rather than just repeating your first email. After 5 follow-ups with no response, move on to avoid damaging your sender reputation.
Authenticate your domain with SPF, DKIM, and DMARC records (Gmail, Yahoo, and Outlook.com require all three from anyone sending 5,000+ emails a day), keep your spam complaint rate under 0.3%, and warm up a new domain for 2 to 4 weeks before sending at scale. Keep daily volume under 50 emails per day for new domains, verify your list to keep bounces low, avoid spam trigger words in subject lines, include a plain-text version alongside HTML, and always include an unsubscribe link. Using a custom domain (not a free Gmail or Outlook address) also significantly improves deliverability.
The ideal cold email is between 50 and 125 words, and 2026 data leans shorter: Instantly's top senders write under 80 words and Saleshandy recommends under 100 for the first touch. Emails under 50 words can feel abrupt and impersonal, while emails over 200 words rarely get read in full. Structure your email as one personalized sentence about the recipient, one sentence about the problem you solve, one sentence of social proof or a specific result, and one clear call to action. If a sentence does not move the reader toward your CTA, remove it.
Midweek mornings in the recipient's time zone. Belkins found Wednesday and Thursday the strongest days (0.48% reply rate) and 8 AM to noon the strongest hours (0.54%), Instantly names Wednesday as the best day, and Saleshandy points to Tuesday 9 to 10 AM. Monday mornings are crowded with weekend backlog, and Friday afternoons see low engagement. Some senders also test a second window around 2 PM. Always adjust for your recipient's time zone, not yours, and test send times for your own audience.
A regular cold email tool (Lemlist, Instantly, Mailshake) handles sending, sequencing, and tracking. An AI cold email generator handles the copy itself: subject lines, opening hooks, value propositions, and CTAs. Most founders use both: generate the copy with an AI cold email writer like this one, then plug it into an outreach tool for sending and follow-ups. You get personalized copy in seconds without paying $79/month for a writing-only feature inside a sending platform.
