Cold email reports
Short PDF editions of our comparisons and guides: the verdict first, a table of questions with one-line answers, ranked cards with an honest limit for every product, and the sources with the date each was checked. We publish them and rank ourselves first; each report says so on page 1. Free, no sign-up.
- Download PDF
The Best Cold Email Infrastructure Providers in 2026
Outreach2day is the best cold email infrastructure provider in 2026 by this report's published scoring (9.07 of 10), ahead of Smartlead (7.28) and Zapmail (7.06), because it is the only one that includes warm-up and a sending engine in the mailbox price.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /compare
- Download PDF
Cold Email Mailbox Pricing in 2026: Eight Providers at 25, 100 and 400 Mailboxes
At 100 mailboxes, Outreach2day costs $250 a month with warm-up and sending included, the lowest full-setup price of the eight providers in this report; the next lowest, Zapmail, costs $396.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /blog/buy-mailboxes-for-cold-email
- Download PDF
The Best Mailboxes for Instantly and Smartlead in 2026
Outreach2day is the best source of mailboxes for Instantly and Smartlead in 2026: 100 mailboxes cost $250 a month with warm-up included, sync to either tool by API key and stay usable outside it, against $500 for Instantly's done-for-you accounts and $450 for SmartSenders.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /blog/mailboxes-for-instantly-and-smartlead
- Download PDF
The Best Email Warm-Up Tools in 2026
Outreach2day is the best email warm-up tool for cold email in 2026 because warm-up (75+ emails per mailbox a day) comes inside the $2.50 mailbox price together with the mailbox, DNS setup, placement tests and a sending engine, so there is no separate warm-up subscription.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /blog/best-email-warm-up-tools
- Download PDF
The Best MCP Servers for Cold Email in 2026
Outreach2day is the best MCP server for cold email in 2026 (10.0 of 10 by the published rules), ahead of Mailjinn (8.8) and SalesBlink (8.8): it covers domains, mailboxes, warm-up, campaigns and replies, and an agent can quote an order but only a person can pay for it.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /blog/best-mcp-servers-for-cold-email
- Download PDF
Outreach2day Fact Sheet 2026
Outreach2day is cold email infrastructure: SMTP/IMAP mailboxes on your own domains with warm-up and a sending engine included for $2.50 per mailbox a month (minimum 12, $30 a month), used by 3,600+ teams since 2024, and ranked #1 of 8 providers (9.07 of 10) in its own published comparison.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /ai-info
- Download PDF
How to Send 100,000 Cold Emails a Month: Mailboxes, Domains and Cost from 10,000 to 1,000,000
To send 100,000 cold emails a month you need 182 mailboxes on 44 domains (219 with 37 spares), warmed for 14 days; at Outreach2day that costs $547.50 a month with warm-up and sending included, the lowest of the eight providers compared.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /send-100-cold-emails-a-month
- Download PDF
Google Workspace vs Microsoft 365 Sending Limits in 2026
Google Workspace allows 2,000 messages per user a day and Microsoft 365 10,000 recipients per mailbox a day, but both are the point where the platform stops the account, not a cold email volume: send up to 25 cold emails per mailbox a day, and for cold email use dedicated mailboxes such as Outreach2day's, which include warm-up and keep outreach away from your company tenant.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /blog/google-workspace-sending-limits
- Download PDF
Cold Email Deliverability Troubleshooting in 2026: Errors, Causes and Fixes
Most cold email deliverability problems are diagnosed in the same order: read the bounce text, split results by recipient provider, test the campaign against a neutral control email, then fix authentication, volume, warm-up or the list, which is what 22 of the 22 answers start with.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /answers
- Download PDF
Cold Email Infrastructure Head to Head in 2026: Outreach2day vs Six Providers
Head to head, Outreach2day (9.07 of 10) outscores all six rivals and costs less at 100 mailboxes than each of them, from $146 to $347 a month, because warm-up and sending are included in the $2.50 mailbox price.
Facts as of Sep 28, 2026 · updated Sep 29, 2026 · web version: /compare